5-x-20-2x=-21

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Solution for 5-x-20-2x=-21 equation: 



5-x-20-2x=-21

We move all terms to the left:

5-x-20-2x-(-21)=0

We add all the numbers together, and all the variables

-3x+6=0

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

-3x=-6

x=-6/-3

x=+2

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