Question

Solve the following system of equations. Express your answer as an ordered pair in the format (a,b), with no spaces between the numbers or symbols.

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

Answer 1

Do you know how to solve these?

Answer 2

its been a while

Answer 3

How about you start by multiplying the top equation by 5 and the bottom one by 2?
That way you can cancel out the x's

Answer 4

Simplifying
2x + 5y = 16

Solving
2x + 5y = 16

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

Answer 5

Add '-2x' to each side of the equation.
2x + -2x + 5y = 16 + -2x

Combine like terms: 2x + -2x = 0
0 + 5y = 16 + -2x
5y = 16 + -2x

Divide each side by '5'.

Answer 6

After you Divide by 5 you get?

Answer 7

each side meaning which numbers? im sorry im just a bit confused.

Answer 8

Can you find out what y is?

Answer 9

okay i understand now for that part , do i put the two equations together?

Answer 10

Doing things the hard way :/
21y=84
y=4

Answer 11

oops duh i shouldve known to do 84 divided by 21. okay so i have the y now um where do i start to solve for x?

Answer 12

nvm i think x is 0

Answer 13

nvm again it was -2. which i dont know how to get that

Answer 14

2x+5y=16
We know that y=4, so:
2x+20=16
Subtract 20 from each side
2x=-4
Divide by 2
x=-2

Answer 15

duh omg thank you i didnt get it before.

Answer 16

Np