Question

How do you solve `-5x - 4y = -48` and `-3x + 2y = 2` using substitution?

Answer 1

`x=4`

Explanation:

`-5x-4y=-48" (1)"`
`-3x+2y=2 " "2y=2+3x " "color(green)(2*)2y=color(green)(2*)(2+3x)`
`color(red)(4y=4+6x)`
`"use (1)"`
`-5x-color(red)((4+6x))=-48`
`-5x-4-6x=-48`
`-11x=-48+4`
`-11x=-44`
`x=44/11`
`x=4`