Question

Question #f116a

Answer 1

`x = 0`

Explanation:

`5 + 4x - 7 = 4x - 2 - x`

Collect like terms

`5 - 7 + 4x = 4x - x - 2`

Combine like terms

`-2 + 4x = 3x - 2`

Subtract `3x` from both sides to get all the `x`'s on the same side

`-2 + x = -2`

Add `-2` to both sides to isolate `x`

`x = 0`
..................................

Check

Sub in `0` in the place of `x` in the original equation

`5 + 4x - 7 = 4x - 2 - x`

`5 + 4*0 - 7 = 4*0 - 2 - 0`

`5 + 0 - 7` should equal `0 - 2 - 0`

`-2` does equal `-2`

Check!