3(-3x+21)+7=0

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Solution for 3(-3x+21)+7=0 equation: 



3(-3x+21)+7=0

We multiply parentheses

-9x+63+7=0

We add all the numbers together, and all the variables

-9x+70=0

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

-9x=-70

x=-70/-9

x=7+7/9

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