21x+3x+15=3x+15

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Solution for 21x+3x+15=3x+15 equation: 



21x+3x+15=3x+15

We move all terms to the left:

21x+3x+15-(3x+15)=0

We add all the numbers together, and all the variables

24x-(3x+15)+15=0

We get rid of parentheses

24x-3x-15+15=0

We add all the numbers together, and all the variables

21x=0

x=0/21

x=0

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