21x=3000+500x

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Solution for 21x=3000+500x equation: 



21x=3000+500x

We move all terms to the left:

21x-(3000+500x)=0

We add all the numbers together, and all the variables

21x-(500x+3000)=0

We get rid of parentheses

21x-500x-3000=0

We add all the numbers together, and all the variables

-479x-3000=0

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

-479x=3000

x=3000/-479

x=-6+126/479

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