7x-21+14x=28-21x

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Solution for 7x-21+14x=28-21x equation: 



7x-21+14x=28-21x

We move all terms to the left:

7x-21+14x-(28-21x)=0

We add all the numbers together, and all the variables

7x+14x-(-21x+28)-21=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

21x+21x-28-21=0

We add all the numbers together, and all the variables

42x-49=0

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

42x=49

x=49/42

x=1+1/6

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