90(30+a)=99

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Solution for 90(30+a)=99 equation: 



90(30+a)=99

We move all terms to the left:

90(30+a)-(99)=0

We add all the numbers together, and all the variables

90(a+30)-99=0

We multiply parentheses

90a+2700-99=0

We add all the numbers together, and all the variables

90a+2601=0

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

90a=-2601

a=-2601/90

a=-28+9/10

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