(3x+21)=(2x+4)

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Solution for (3x+21)=(2x+4) equation: 



(3x+21)=(2x+4)

We move all terms to the left:

(3x+21)-((2x+4))=0

We get rid of parentheses

3x-((2x+4))+21=0



We calculate terms in parentheses: -((2x+4)), so:

(2x+4)

We get rid of parentheses

2x+4

Back to the equation:

-(2x+4)



We get rid of parentheses

3x-2x-4+21=0

We add all the numbers together, and all the variables

x+17=0

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

x=-17

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