12x+21=3(4x+6)3

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Solution for 12x+21=3(4x+6)3 equation: 



12x+21=3(4x+6)3

We move all terms to the left:

12x+21-(3(4x+6)3)=0



We calculate terms in parentheses: -(3(4x+6)3), so:

3(4x+6)3

We multiply parentheses

36x+54

Back to the equation:

-(36x+54)



We get rid of parentheses

12x-36x-54+21=0

We add all the numbers together, and all the variables

-24x-33=0

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

-24x=33

x=33/-24

x=-1+3/8

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