21+2x=28-2x

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Solution for 21+2x=28-2x equation: 



21+2x=28-2x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We get rid of parentheses

2x+2x-28+21=0

We add all the numbers together, and all the variables

4x-7=0

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

4x=7

x=7/4

x=1+3/4

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