33=2x+21

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Solution for 33=2x+21 equation: 



33=2x+21

We move all terms to the left:

33-(2x+21)=0

We get rid of parentheses

-2x-21+33=0

We add all the numbers together, and all the variables

-2x+12=0

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

-2x=-12

x=-12/-2

x=+6

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