X-45=9(2x+3)-21

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Solution for X-45=9(2x+3)-21 equation: 



X-45=9(2X+3)-21

We move all terms to the left:

X-45-(9(2X+3)-21)=0



We calculate terms in parentheses: -(9(2X+3)-21), so:

9(2X+3)-21

We multiply parentheses

18X+27-21

We add all the numbers together, and all the variables

18X+6

Back to the equation:

-(18X+6)



We get rid of parentheses

X-18X-6-45=0

We add all the numbers together, and all the variables

-17X-51=0

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

-17X=51

X=51/-17

X=-3

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