21x-7x+7=18+3x

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Solution for 21x-7x+7=18+3x equation: 



21x-7x+7=18+3x

We move all terms to the left:

21x-7x+7-(18+3x)=0

We add all the numbers together, and all the variables

21x-7x-(3x+18)+7=0

We add all the numbers together, and all the variables

14x-(3x+18)+7=0

We get rid of parentheses

14x-3x-18+7=0

We add all the numbers together, and all the variables

11x-11=0

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

11x=11

x=11/11

x=1

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