21(x=13-5)

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Solution for 21(x=13-5) equation: 



21(x=13-5)

We move all terms to the left:

21(x-(13-5))=0

We add all the numbers together, and all the variables

21(x-8)=0

We multiply parentheses

21x-168=0

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

21x=168

x=168/21

x=8

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