Question

-6+7s-4r-2 use s=7 and r=-7

Simplified

Answer 1

`- 6 + 7s - 4r - 2 \\ \\ - 6 + 7(7) - 4( - 7) - 2 \\ \\ - 6 + 49 + 28 - 2 \\ \\ = 6 9`

I hope I helped you^_^