28+12x+4=21x+5

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Solution for 28+12x+4=21x+5 equation: 



28+12x+4=21x+5

We move all terms to the left:

28+12x+4-(21x+5)=0

We add all the numbers together, and all the variables

12x-(21x+5)+32=0

We get rid of parentheses

12x-21x-5+32=0

We add all the numbers together, and all the variables

-9x+27=0

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

-9x=-27

x=-27/-9

x=+3

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