Question

Solve the following system of equations.

3x + 2y - 5 = 0
x = y + 10

Answer 1

since the second equation is already arranged in terms of x
you can just plug it in equation 1 and solve for y
here's what i mean:
3x + 2y - 5 = 0 -> eqn 1
x = y + 10 -> eqn 2

sub eqn2 in eqn 1
3( y + 10 ) + 2y - 5 = 0

now can you solve for y?