X=(7-2x)3

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Solution for X=(7-2x)3 equation: 



X=(7-2X)3

We move all terms to the left:

X-((7-2X)3)=0

We add all the numbers together, and all the variables

X-((-2X+7)3)=0



We calculate terms in parentheses: -((-2X+7)3), so:

(-2X+7)3

We multiply parentheses

-6X+21

Back to the equation:

-(-6X+21)



We get rid of parentheses

X+6X-21=0

We add all the numbers together, and all the variables

7X-21=0

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

7X=21

X=21/7

X=3

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