45+18x=21x

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Solution for 45+18x=21x equation: 



45+18x=21x

We move all terms to the left:

45+18x-(21x)=0

We add all the numbers together, and all the variables

-3x+45=0

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

-3x=-45

x=-45/-3

x=+15

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