21=-14x-28

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Solution for 21=-14x-28 equation: 



21=-14x-28

We move all terms to the left:

21-(-14x-28)=0

We get rid of parentheses

14x+28+21=0

We add all the numbers together, and all the variables

14x+49=0

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

14x=-49

x=-49/14

x=-3+1/2

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