21+12x=55+10x

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Solution for 21+12x=55+10x equation: 



21+12x=55+10x

We move all terms to the left:

21+12x-(55+10x)=0

We add all the numbers together, and all the variables

12x-(10x+55)+21=0

We get rid of parentheses

12x-10x-55+21=0

We add all the numbers together, and all the variables

2x-34=0

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

2x=34

x=34/2

x=17

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