4x+20=-8x-28

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Solution for 4x+20=-8x-28 equation: 



4x+20=-8x-28

We move all terms to the left:

4x+20-(-8x-28)=0

We get rid of parentheses

4x+8x+28+20=0

We add all the numbers together, and all the variables

12x+48=0

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

12x=-48

x=-48/12

x=-4

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