5-4a=90+1a

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Solution for 5-4a=90+1a equation: 



5-4a=90+1a

We move all terms to the left:

5-4a-(90+1a)=0

We add all the numbers together, and all the variables

-4a-(a+90)+5=0

We get rid of parentheses

-4a-a-90+5=0

We add all the numbers together, and all the variables

-5a-85=0

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

-5a=85

a=85/-5

a=-17

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