8x+21=-21

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Solution for 8x+21=-21 equation: 



8x+21=-21

We move all terms to the left:

8x+21-(-21)=0

We add all the numbers together, and all the variables

8x+42=0

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

8x=-42

x=-42/8

x=-5+1/4

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