21x=63+28

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Solution for 21x=63+28 equation: 



21x=63+28

We move all terms to the left:

21x-(63+28)=0

We add all the numbers together, and all the variables

21x-91=0

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

21x=91

x=91/21

x=4+1/3

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