(5x+3)=(7x+21)

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Solution for (5x+3)=(7x+21) equation: 



(5x+3)=(7x+21)

We move all terms to the left:

(5x+3)-((7x+21))=0

We get rid of parentheses

5x-((7x+21))+3=0



We calculate terms in parentheses: -((7x+21)), so:

(7x+21)

We get rid of parentheses

7x+21

Back to the equation:

-(7x+21)



We get rid of parentheses

5x-7x-21+3=0

We add all the numbers together, and all the variables

-2x-18=0

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

-2x=18

x=18/-2

x=-9

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