Question

−7y = −16x − 49
−7y = −6x + 21
find x and y

Answer 1

the left side is same for both so you can put the right sides equal to each other and solve for x.

After you get x put it back in one of the equations to get y.

Answer 2

i dont ivide by -7 first

Answer 3

?

Answer 4

divide*

Answer 5

Just do what I said.

Answer 6

Why do you think you have to divide by 7?

Answer 7

its (7,9)