Question

Use the substitution method to solve the linear system.
3x=9
-2x+y=-8
and(different problem)
x-2y=-13
y=-2x-6

Answer 1

y=-2
and x=3

^ for the first one

Answer 2

x+4x+12=-13
5x=-25
x=-5

y=-2(-5)-6
y=10-6
y=4

x=-5 and y=4 for the second one :)