-66+4x+5x=42

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Solution for -66+4x+5x=42 equation: 



-66+4x+5x=42

We move all terms to the left:

-66+4x+5x-(42)=0

We add all the numbers together, and all the variables

9x-108=0

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

9x=108

x=108/9

x=12

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