3+x=8-21=-7xx/4=2x-6=-5

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Solution for 3+x=8-21=-7xx/4=2x-6=-5 equation: 



3+x=8-21=-7xx/4=2x-6=-5

We move all terms to the left:

3+x-(8-21)=0

We add all the numbers together, and all the variables

x+3-(-13)=0

We add all the numbers together, and all the variables

x+16=0

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

x=-16

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