21x+15=6x+30

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Solution for 21x+15=6x+30 equation: 



21x+15=6x+30

We move all terms to the left:

21x+15-(6x+30)=0

We get rid of parentheses

21x-6x-30+15=0

We add all the numbers together, and all the variables

15x-15=0

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

15x=15

x=15/15

x=1

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