Question

Question #0d390

Answer 1

`x=-8`

Explanation:

First we will distribute parentheses/brackets: (we're focusing on the left side)

`-(9-3x)=-(9)-(-3x)` which is equal to `-9+3x`.

Therefore, the left side would be `4x-9+3x`

Group like terms:
`4x+3x-9`
`4x+3x=7x`

Equation:
`7x-9`

Whole equation:
`7x-9=8x-1`
Add `9` to both sides:
`7x-9color(blue)+color(blue)9=8x-1color(blue)+color(blue)9`
Simplify:
`7x=8x+8`
Subtract `8x` from both sides:
`7xcolor(blue)-color(blue)8color(blue)x=8x+8color(blue)-color(blue)8color(blue)x`
Simplify:
`-x=8`
Divide both sides by `-1`

`(-x)/(-1)=8/(-1)`

Answer:
`x=-8`