-8x-7+5x=21

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Solution for -8x-7+5x=21 equation: 



-8x-7+5x=21

We move all terms to the left:

-8x-7+5x-(21)=0

We add all the numbers together, and all the variables

-3x-28=0

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

-3x=28

x=28/-3

x=-9+1/3

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