3(7x+1)-15=135

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Solution for 3(7x+1)-15=135 equation: 



3(7x+1)-15=135

We move all terms to the left:

3(7x+1)-15-(135)=0

We add all the numbers together, and all the variables

3(7x+1)-150=0

We multiply parentheses

21x+3-150=0

We add all the numbers together, and all the variables

21x-147=0

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

21x=147

x=147/21

x=7

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