5x+21=3(2x+5)

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Solution for 5x+21=3(2x+5) equation: 



5x+21=3(2x+5)

We move all terms to the left:

5x+21-(3(2x+5))=0



We calculate terms in parentheses: -(3(2x+5)), so:

3(2x+5)

We multiply parentheses

6x+15

Back to the equation:

-(6x+15)



We get rid of parentheses

5x-6x-15+21=0

We add all the numbers together, and all the variables

-1x+6=0

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

-x=-6

x=-6/-1

x=+6

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