Question

How do you solve the following system using substitution?: #7x-y=10 x=y/3-2#

Answer 1

`x=4,y=18`

Explanation:

From the second equation we get:
`7(y/3-2)-y=10`
`7/3y-y=24`
`7/3y-3/3y=24`
`4/3y=24`
`y=3*24/4=18`
so
`x=18/3-2=6-2=4`