Question

use the substitution method to solve 3x+2y=11 and x-2y=9. Solve for both x and y

Answer 1

Why don't you start by isolating y for both equations?

Answer 2

so would I subtract -2 from each 2y?

Answer 3

Nope. Remember that 2y is 2 times y, not 2 plus y! That means you need to divide, not subtract. Also, when you divide, you must divide everything.

Answer 4

i.e. you would divide 3x by 2 and 11 by 2 when you divide 2y by 2