21-9x+28=-14

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Solution for 21-9x+28=-14 equation: 



21-9x+28=-14

We move all terms to the left:

21-9x+28-(-14)=0

We add all the numbers together, and all the variables

-9x+63=0

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

-9x=-63

x=-63/-9

x=+7

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