Question

Solve it by substitution

Answer 1

4x-3y=-1
3x-y=-2      ⇒y=3x+2


substitution method:

4x-3(3x+2)=-1
4x-9x-6=-1
-5x=-1+6
-5x=5
x=5/-5=-1

y=3x+2
y=3(-1)+2=-3+2=-1

answer: x=-1; y=-1

to check:
4x-3y=-1
4(-1)-3(-1)=-4+3=-1

3x-y=-2
3(-1)-(-1)=-3+1=-2