Question

solve the solution by the elimination method

5x+3y=-13
7x-2y=17

Answer 1

sorry,solve the system

Answer 2

wanna cheat?

Answer 3

there are no cheats in math, only more clever methods

Answer 4

Solve for y for both equations. Set y = y. Then solve for x.

Answer 5

answer is
\[x=\frac{25}{31},y=-\frac{176}{31}\]

Answer 6

cheating is learning

Answer 7

lol

Answer 8

No it isn't, lol

Answer 9

it is how i learned for sure. we just called it "research"

Answer 10

Hmmm

Answer 11

http://www.youtube.com/watch?v=IL4vWJbwmqM

Answer 12

so im guessing the answer isnt coming from satellite

Answer 13

i sent it already

Answer 14

5x + 3y = - 13
5x = -13-3y
x= (-13-3y)/5

7(-13-4y)/5 - 2y = 7
(-91-28y)/5 - 2y = 7
(-91-28y-10y)/5 = 7
(-91-38y) = 35
-38y = 35 + 91
-38y = 126
y = 126/-38
y = -126/38
y = -63/19
5x + 3(-63/19) = -13
5x -189/19 =- 13
(95x - 189)/19 = -13
95x - 189 = -247
95x = -247 + 189
95x = -58
x = -58/95

Answer 15

here it is again.

\[x=\frac{25}{31},y=-\frac{176}{31}\]

Answer 16

ordered pair

Answer 17

c'mon.
\[(\frac{25}{31},-\frac{176}{31})\]

Answer 18

I'm getting x = 25/31

Answer 19

got it or not cali

Answer 20

I don't know how scientist got his answer

Answer 21

ok one more time

\[(\frac{25}{31},-\frac{176}{31})\]

Answer 22

there may be some calculations mistake

Answer 23

I think Cali may have been waiting for more than one person to post the same answer

Answer 24

5x+3y=-137_x-2y=17

Since -2y does not contain the variable to solve for, move it to the right-hand side of the equation by adding 2y to both sides.
5x+3y=-137_x=2y+17

Replace all occurrences of x with the solution found by solving the last equation for x. In this case, the value substituted is 2y+17.
5(2y+17)+3y=-137_x=2y+17

Multiply 5 by each term inside the parentheses.
(10y+85)+3y=-137_x=2y+17

Since 10y and 3y are like terms, add 3y to 10y to get 13y.
13y+85=-137_x=2y+17

Since 85 does not contain the variable to solve for, move it to the right-hand side of the equation by subtracting 85 from both sides.
13y=-85-137_x=2y+17

Subtract 137 from -85 to get -222.
13y=-222_x=2y+17

Divide each term in the equation by 13.
(13y)/(13)=-(222)/(13)_x=2y+17

Simplify the left-hand side of the equation by canceling the common terms.
y=-(222)/(13)_x=2y+17

Replace all occurrences of y with the solution found by solving the last equation for y. In this case, the value substituted is -(222)/(13).
y=-(222)/(13)_x=2(-(222)/(13))+17

Multiply 2 by each term inside the parentheses.
y=-(222)/(13)_x=-(444)/(13)+17

To add fractions, the denominators must be equal. The denominators can be made equal by finding the least common denominator (LCD). In this case, the LCD is 13. Next, multiply each fraction by a factor of 1 that will create the LCD in each of the fractions.
y=-(222)/(13)_x=17*(13)/(13)-(444)/(13)

Complete the multiplication to produce a denominator of 13 in each expression.
y=-(222)/(13)_x=(221)/(13)-(444)/(13)

Combine the numerators of all fractions that have common denominators.
y=-(222)/(13)_x=(221-444)/(13)

Subtract 444 from 221 to get -223.
y=-(222)/(13)_x=(-223)/(13)

Move the minus sign from the numerator to the front of the expression.
y=-(222)/(13)_x=-(223)/(13)

This is the solution to the system of equations.
y=-(222)/(13)_x=-(223)/(13)

Answer 25

dubwise
http://www.youtube.com/watch?v=1S9078O6Il8

Answer 26

Scientist!!!

Answer 27

I think your input was wrong

Answer 28

What is 7_x ?

Answer 29

heavyweight dub champion. dub barrington levy robin hood
all time greatest

Answer 30

Scientist...Bagratrix is a fraud

Answer 31

Always give wrong answers

Answer 32

bliss it is not
no bliss

Answer 33

it never gives wrong answers

Answer 34

Hold on, let me check...

Answer 35

Yep, it's wrong...x is supposed to be positive, not negative

Answer 36

Look at the second equation...If x is negative, no way you get positive 17 for the answer....sorry

Answer 37

it solved with substitution method

Answer 38

Besides, x is supposed to be a value less than 1. You have something much greater than 1

Answer 39

5x+3y=-13_7x-2y=17

Multiply each equation by the value that makes the coefficients of y equal. This value is found by dividing the least common multiple of the coefficients of y by the current coefficient. In this case, the least common multiple is 6.
2*(5x+3y=-13)_3*(7x-2y=17)

Multiply each equation by the value that makes the coefficients of y equal. This value is found by dividing the least common multiple of the coefficients of y by the current coefficient. In this case, the least common multiple is 6.
2*(5x+3y)=2(-13)_3*(7x-2y)=3(17)

Multiply 2 by each term inside the parentheses.
2*(5x+3y)=-26_3*(7x-2y)=3(17)

Multiply 2 by each term inside the parentheses.
(10x+6y)=-26_3*(7x-2y)=3(17)

Remove the parentheses around the expression 10x+6y.
10x+6y=-26_3*(7x-2y)=3(17)

Multiply 3 by each term inside the parentheses.
10x+6y=-26_3*(7x-2y)=51

Multiply 3 by each term inside the parentheses.
10x+6y=-26_(21x-6y)=51

Remove the parentheses around the expression 21x-6y.
10x+6y=-26_21x-6y=51

Add the two equations together to eliminate y from the system.
21x-6y=51_<U>10x+6y=-26<u>_31x =25

Divide each term in the equation by 31.
x=(25)/(31)

Substitute the value found for x into the original equation to solve for y.
10((25)/(31))+6y=-26

Multiply 10 by each term inside the parentheses.
(250)/(31)+6y=-26

Move all terms not containing y to the right-hand side of the equation.
6y=-(1056)/(31)

Divide each term in the equation by 6.
y=-(176)/(31)

This is the final solution to the independent system of equations.
x=(25)/(31)_y=-(176)/(31)

Answer 40

Oh wow, now your answers are magically correct...

Answer 41

got it now bliss it is never wrong
before i did it with substitution method but now i did it with addition/elimination method

Answer 42

There's only one way to get it right everytime

Answer 43

good lord what a lot of work.

Answer 44

lol

Answer 45

yes very much

Answer 46

Sometimes a lot of hard work is wasted if the answer is wrong

Answer 47

yes but no problem