Question

Use the substitution method to solve the system of equations.

2x – 7y = 1
x – 8y = –4

Answer 1

third time I've seen this problem today lol
from (2)
x=8y-4
sub into (1)
2(8y-4)-7y=1
16y-8-7y=1
9y=9
y=1
sub this answer back into (2)
x-8(1)=-4
x=4

Answer 2

you guys should get an account for the entire class, saves us work

Answer 3

I know, right?