21x=42*28

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Solution for 21x=42*28 equation: 



21x=42*28

We move all terms to the left:

21x-(42*28)=0

We add all the numbers together, and all the variables

21x-1176=0

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

21x=1176

x=1176/21

x=56

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