12x+28-10x=-21-5x

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Solution for 12x+28-10x=-21-5x equation: 



12x+28-10x=-21-5x

We move all terms to the left:

12x+28-10x-(-21-5x)=0

We add all the numbers together, and all the variables

12x-10x-(-5x-21)+28=0

We add all the numbers together, and all the variables

2x-(-5x-21)+28=0

We get rid of parentheses

2x+5x+21+28=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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