7x+2(7x-12)=123

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Solution for 7x+2(7x-12)=123 equation: 



7x+2(7x-12)=123

We move all terms to the left:

7x+2(7x-12)-(123)=0

We multiply parentheses

7x+14x-24-123=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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