21x=2x+39+16x

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Solution for 21x=2x+39+16x equation: 



21x=2x+39+16x

We move all terms to the left:

21x-(2x+39+16x)=0

We add all the numbers together, and all the variables

21x-(18x+39)=0

We get rid of parentheses

21x-18x-39=0

We add all the numbers together, and all the variables

3x-39=0

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

3x=39

x=39/3

x=13

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