21-2x=12x-45

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Solution for 21-2x=12x-45 equation: 



21-2x=12x-45

We move all terms to the left:

21-2x-(12x-45)=0

We get rid of parentheses

-2x-12x+45+21=0

We add all the numbers together, and all the variables

-14x+66=0

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

-14x=-66

x=-66/-14

x=4+5/7

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