Question

3u+9-8u=-31
simplify

Answer 1

u = 8

Explanation:

Answer 2

u=8

Explanation:

Greetings !

Given expression

`3u + 9 - 8u = - 31`

Group like terms of the expression

`3u - 8u + 9 = - 31`

Add similar elements

`3u - 8u = - 5u`

Thus,

`- 5u + 9 = - 31`

subtract 9 from both sides

`- 5u + 9 - 9 = - 31 - 9`

simplify

`- 5u = - 40`

then divide both sides of the expression by -5.

`( - 5u)/( - 5) = ( - 40)/( - 5)`

simplify

`u = 8`

Hope it helps!