7(3+3x)=231

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Solution for 7(3+3x)=231 equation: 



7(3+3x)=231

We move all terms to the left:

7(3+3x)-(231)=0

We add all the numbers together, and all the variables

7(3x+3)-231=0

We multiply parentheses

21x+21-231=0

We add all the numbers together, and all the variables

21x-210=0

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

21x=210

x=210/21

x=10

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