12x+21-11x=-28-6x

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Solution for 12x+21-11x=-28-6x equation: 



12x+21-11x=-28-6x

We move all terms to the left:

12x+21-11x-(-28-6x)=0

We add all the numbers together, and all the variables

12x-11x-(-6x-28)+21=0

We add all the numbers together, and all the variables

x-(-6x-28)+21=0

We get rid of parentheses

x+6x+28+21=0

We add all the numbers together, and all the variables

7x+49=0

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

7x=-49

x=-49/7

x=-7

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