Question

How do you solve `2x + y = 6` and `y = 3x + 4` using substitution?

Answer 1

`x=2/5`

Explanation:

`2x+y=6" "color(green)(y=3x+4)`
`2x+color(green)(3x+4)=6`
`5x=6-4" "5x=2`
`x=2/5`