-21=-x/13

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Solution for -21=-x/13 equation: 



-21=-x/13

We move all terms to the left:

-21-(-x/13)=0

We get rid of parentheses

x/13-21=0

We multiply all the terms by the denominator


x-21*13=0

We add all the numbers together, and all the variables

x-273=0

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

x=273

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