Question

Using subsitution please help

Answer 1

Solve the systems using substitution.

6x + 2y = 0
4x + y = -1

3x + 2y = -4
x + 2y = -8

5x - 4y = 14
x - 2y = -2

x + 3y = -4
4x + 5y = 5

x + 3y = -5
2x - y = 18

Answer 2

to use substitution you just need to get one of the variables by itself, for instance the second equation 4x+y=-1
you can move the 4x to the other side and you get y=-1-4x
now substitute y into the first equation
so you end up with 6x+2(-1-4x)=0
now you can just distribute the 2 and solve for x