7(x-15)=42

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Solution for 7(x-15)=42 equation: 



7(x-15)=42

We move all terms to the left:

7(x-15)-(42)=0

We multiply parentheses

7x-105-42=0

We add all the numbers together, and all the variables

7x-147=0

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

7x=147

x=147/7

x=21

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