Question

Use substitution to solve.
x-5y=10
2x-10y=20

Answer 1

Hint:

solve the first equation for x

x-5y=10

x=10+5y

then plug this into the second equation

2x-10y=20

2(10+5y)-10y=20

20+10y-10y=20

I'll let you finish

Answer 2

They both cancel out so it would equal 0,0

Answer 3

Do you know how to use elimination and solve this question?
X+4y=-8
X-4y=-8