(-7a)+18a+12a-2a+(-20)=1

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Solution for (-7a)+18a+12a-2a+(-20)=1 equation: 



(-7a)+18a+12a-2a+(-20)=1

We move all terms to the left:

(-7a)+18a+12a-2a+(-20)-(1)=0

determiningTheFunctionDomain
(-7a)+18a+12a-2a-1+(-20)=0

We add all the numbers together, and all the variables

28a+(-7a)-21=0

We get rid of parentheses

28a-7a-21=0

We add all the numbers together, and all the variables

21a-21=0

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

21a=21

a=21/21

a=1

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