Question

x-y=0
-3x-y=2

Use linear combinations to solve the system of linear equations.

Answer 1

couldn't you just use substitution method to solve the linear equation?
x-y=0
-3x-y=2

x=y

-3(y)-y=2
-4y=2

y=(-1/2)

Answer 2

thank you so much
can you help me with one more problem

v-w=-5
v+2w=4