1a+20=55-4a

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Solution for 1a+20=55-4a equation: 



1a+20=55-4a

We move all terms to the left:

1a+20-(55-4a)=0

We add all the numbers together, and all the variables

1a-(-4a+55)+20=0

We add all the numbers together, and all the variables

a-(-4a+55)+20=0

We get rid of parentheses

a+4a-55+20=0

We add all the numbers together, and all the variables

5a-35=0

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

5a=35

a=35/5

a=7

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