-9(-11x+21)=504

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Solution for -9(-11x+21)=504 equation: 



-9(-11x+21)=504

We move all terms to the left:

-9(-11x+21)-(504)=0

We multiply parentheses

99x-189-504=0

We add all the numbers together, and all the variables

99x-693=0

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

99x=693

x=693/99

x=7

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