5=-2x=21

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Solution for 5=-2x=21 equation: 



5=-2x=21

We move all terms to the left:

5-(-2x)=0

We get rid of parentheses

2x+5=0

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

2x=-5

x=-5/2

x=-2+1/2

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