Question

Please help and explain

Answer 1

3x-1+x+7=54

4x+6=54

4x=48

x=12

Answer 2

`x = 12`

Explanation:

`3x - 1 + x + 7 = 54`

`4x + 6 = 54`

`4x + 6 - 6 = 54 - 6`

`4x = 48`

`(4x)/(4) = (48)/(4)`

`x = 12`

`3(12) - 1 + (12) + 7 = 54`

`36 - 1 + 12 + 7 = 54`

`35 + 12 + 7 = 54`

`35 + 19 = 54`

`54 = 54`