Respuesta :

Ammimochi

Simplify 3x - 5 + 12x - 4x + 14 to 11x + 9

11x + 9 = 86

Subtract 9 from both sides

11x = 86 - 9

Simplify 86 - 9 to 77

11x = 77

Divide both sides by 11

x = 77/11

Simplify 77/11 to 7

x = 7
Here you go
First collect like terms
3x+12x-4x-5+14 = 86
15x-4x+9=86
11x+9=86
Transpose +9 to the R.H.S
11x=86-9
11x=77
Divide both sides by the coefficient of x(11)
X=77÷11
X=7
hope it'll help you