21x-8=-7x-16

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Solution for 21x-8=-7x-16 equation: 



21x-8=-7x-16

We move all terms to the left:

21x-8-(-7x-16)=0

We get rid of parentheses

21x+7x+16-8=0

We add all the numbers together, and all the variables

28x+8=0

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

28x=-8

x=-8/28

x=-2/7

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