I'll do one for you. They all work the same way. You need the practice doing them yourself.
Substitute 8y - 12 for x in the first equation.
8y - 12 + 12y = 68
20 y = 80
y = 4
x = 8y - 12 = 32 - 12 = 20
Hi, I am taking Algebra 2 and I need help with some Substitution method problems:
x+12y=68
x=8y-12
x+3y=7
2x-4y=24
3a+b=3
2a-5b=-15
-6=3x-6y
4x=4+5y
1 answer
1 answer