Question

How do you solve `y=x-4` and `4x+y=26` using substitution?

Answer 1

`x=6`

Explanation:

`y=x-4`
`26=4x+y`

If `y=y`, then we can rewrite this system as this: `4x+x-4=26`.

Then we combine like terms and add `4` on both sides to give us `5x=30`. Divide by `5` on both sides and we arrive at the solution: `x=6`