21+(-5x)=-9

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Solution for 21+(-5x)=-9 equation: 



21+(-5x)=-9

We move all terms to the left:

21+(-5x)-(-9)=0

We add all the numbers together, and all the variables

(-5x)+30=0

We get rid of parentheses

-5x+30=0

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

-5x=-30

x=-30/-5

x=+6

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