Question

Solve the system by the method of substitution.


y = 3x + 8
y = 2x + 7

Answer 1

So basically you can just subtract the second equation from the first one to get rid of the y.
So you get:
x+1=0
x=-1

You substitute this into the equation and get y=-3+8
So y=5

Therefore the solution is (-1,5)

Answer 2

Thank you

Answer 3

OK, @nincompoop. I guess I forgot the difference, like I always do.