3(21-x)=33

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Solution for 3(21-x)=33 equation: 



3(21-x)=33

We move all terms to the left:

3(21-x)-(33)=0

We add all the numbers together, and all the variables

3(-1x+21)-33=0

We multiply parentheses

-3x+63-33=0

We add all the numbers together, and all the variables

-3x+30=0

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

-3x=-30

x=-30/-3

x=+10

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