21*(x-24)=42*(x-12)

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Solution for 21*(x-24)=42*(x-12) equation: 



21(x-24)=42(x-12)

We move all terms to the left:

21(x-24)-(42(x-12))=0

We multiply parentheses

21x-(42(x-12))-504=0



We calculate terms in parentheses: -(42(x-12)), so:

42(x-12)

We multiply parentheses

42x-504

Back to the equation:

-(42x-504)



We get rid of parentheses

21x-42x+504-504=0

We add all the numbers together, and all the variables

-21x=0

x=0/-21

x=0

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