Question

figure out X in this question using elimination...
7x+5y=19
-7x-2y=-16

Answer 1

x = 2

Answer 2

but how do you get -4y to equal to +5y evenly?

Answer 3

\[(7x + 5y = 19)2\]
\[(-7x - 2y = -16)5\]

Answer 4

x will be eliminated, but you can still solve for it by working with y first. adding the two expressions, you get 3y = 3, so y = 1. when y=1, you'll find that x=2 upon substituting to one of the expressions

Answer 5

bt i thought that only finds where thye intercept?