Question

Solve each system by substitution.
1. y=x+5
2x+y=11

2. 4x-3y=-1
3x-y=-2

3. y=-x
y=-2x-5

Answer 1

#1 x=2

Answer 2

Do I then just plug in x=2 into any one of them to get y? Right?

Answer 3

yes :) but first try and figure out how I got x=2 and see if you understand

Answer 4

first you solve one of the variables. When you get your answer you plug them in.

Answer 5

Okay, when I tried to solve to get x=2 I got 4/3. What did I do wrong?