2+7x+x=42

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Solution for 2+7x+x=42 equation: 



2+7x+x=42

We move all terms to the left:

2+7x+x-(42)=0

We add all the numbers together, and all the variables

8x-40=0

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

8x=40

x=40/8

x=5

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