3х+8х=132

To solve this equation, we need to combine like terms and isolate the variable on one side of the equation.

First, let's combine the like terms on the left side of the equation: 3x + 8x = 132

Adding the coefficients of x, we get: 11x = 132

Now, we can isolate x by dividing both sides of the equation by 11: 11x/11 = 132/11

Simplifying, we have: x = 12

Therefore, the solution to the equation 3x + 8x = 132 is x = 12.