7-5u=42

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Solution for 7-5u=42 equation: 



7-5u=42

We move all terms to the left:

7-5u-(42)=0

We add all the numbers together, and all the variables

-5u-35=0

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

-5u=35

u=35/-5

u=-7

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