(x+2x)+3x=66

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Solution for (x+2x)+3x=66 equation: 



(x+2x)+3x=66

We move all terms to the left:

(x+2x)+3x-(66)=0

We add all the numbers together, and all the variables

(+3x)+3x-66=0

We add all the numbers together, and all the variables

3x+(+3x)-66=0

We get rid of parentheses

3x+3x-66=0

We add all the numbers together, and all the variables

6x-66=0

We move all terms containing x to the left, all other terms to the right

6x=66

x=66/6

x=11

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