21x+28x=28+21x

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



21x+28x=28+21x

We move all terms to the left:

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

We add all the numbers together, and all the variables

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

We add all the numbers together, and all the variables

49x-(21x+28)=0

We get rid of parentheses

49x-21x-28=0

We add all the numbers together, and all the variables

28x-28=0

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

28x=28

x=28/28

x=1

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