Question

fan for answer
what is the solution the the system

7x+5y=19
-7x-2y=-16

A.(2,1)
B.(1,2)
C.(7,5)
D.(-7,-2)

A

Answer 1

Simplifying
7x + -5y = 19

Solving
7x + -5y = 19

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '5y' to each side of the equation.
7x + -5y + 5y = 19 + 5y

Combine like terms: -5y + 5y = 0
7x + 0 = 19 + 5y
7x = 19 + 5y

Divide each side by '7'.
x = 2.714285714 + 0.7142857143y

Simplifying
x = 2.714285714 + 0.7142857143y

Answer 2

lol
HI!!

Answer 3

Answer would be A. (2,1)

Answer 4

\[7x+5y=19 \\-7x-2y=-16 \] add them up in a column and get
\[3y=3\]

Answer 5

that tells you \(y=1\)

Answer 6

thanksss

Answer 7

yw \(\color\magenta\heartsuit\)

Answer 8

Umm...

Answer 9

could you help me with a few more??

Answer 10

Me? Yeah..

Answer 11

Thank you thank you thank you i really suck at math

Answer 12

It's cool, post your question.. please...or open a new tab and tag me, k?

Answer 13

which method would be the simplest way to solve the system
y=1/2x
2x=3y=28

graphing- my choice
substitution
elimination
distributive

Answer 14

Substitution. Replace y with x/2 in the second equation and you can quickly solve for x.
I don't think they are expecting you to solve the system but just which method is the simplest.

But if they want a solution then:
Put y = x/2 in second equation:
2x + 3x/2 = 28
multiply throughout by 2
4x + 3x = 56
7x = 56
x = 8
y = x/2 = 8/2 = 4

x = 8, y = 4

Answer 15

@anti-mathGirl

Answer 16

Ohh i get it @im.celibate

Answer 17

Yep, do you need anymore help?

Answer 18

not now but i'll let you know if i do

Answer 19

@im.celibate