21(z+8)-138=3(7z+10)

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Solution for 21(z+8)-138=3(7z+10) equation: 



21(z+8)-138=3(7z+10)

We move all terms to the left:

21(z+8)-138-(3(7z+10))=0

We multiply parentheses

21z-(3(7z+10))+168-138=0



We calculate terms in parentheses: -(3(7z+10)), so:

3(7z+10)

We multiply parentheses

21z+30

Back to the equation:

-(21z+30)



We add all the numbers together, and all the variables

21z-(21z+30)+30=0

We get rid of parentheses

21z-21z-30+30=0

We add all the numbers together, and all the variables

=0

z=0/1

z=0

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