21(x+3)=15(x+5)

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Solution for 21(x+3)=15(x+5) equation: 



21(x+3)=15(x+5)

We move all terms to the left:

21(x+3)-(15(x+5))=0

We multiply parentheses

21x-(15(x+5))+63=0



We calculate terms in parentheses: -(15(x+5)), so:

15(x+5)

We multiply parentheses

15x+75

Back to the equation:

-(15x+75)



We get rid of parentheses

21x-15x-75+63=0

We add all the numbers together, and all the variables

6x-12=0

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

6x=12

x=12/6

x=2

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