Question

3(x-1) - 8 = 4(1+x) +5

Answer 1

For this case we must simplify the following expression and find the value of the variable "x":

`3 (x-1) -8 = 4 (1 + x) +5`

We apply distributive property to the terms of parentheses:

`3x-3-8 = 4 + 4x + 5`

We add similar terms:

`3x-11 = 9 + 4x`

We subtract 4x on both sides:

`3x-4x-11 = 9\\-x-11 = 9`

We add 11 to both sides:

`-x = 11 + 9\\-x = 20\\x = -20`

Answer:

`x = -20`