18=50a-55a

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Solution for 18=50a-55a equation: 



18=50a-55a

We move all terms to the left:

18-(50a-55a)=0

We add all the numbers together, and all the variables

-(-5a)+18=0

We get rid of parentheses

5a+18=0

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

5a=-18

a=-18/5

a=-3+3/5

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