7-1x=42

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Solution for 7-1x=42 equation: 



7-1x=42

We move all terms to the left:

7-1x-(42)=0

We add all the numbers together, and all the variables

-1x-35=0

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

-x=35

x=35/-1

x=-35

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