21-22x=28-15x

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Solution for 21-22x=28-15x equation: 



21-22x=28-15x

We move all terms to the left:

21-22x-(28-15x)=0

We add all the numbers together, and all the variables

-22x-(-15x+28)+21=0

We get rid of parentheses

-22x+15x-28+21=0

We add all the numbers together, and all the variables

-7x-7=0

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

-7x=7

x=7/-7

x=-1

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