4a+5+3(a-2)=90

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Solution for 4a+5+3(a-2)=90 equation: 



4a+5+3(a-2)=90

We move all terms to the left:

4a+5+3(a-2)-(90)=0

We add all the numbers together, and all the variables

4a+3(a-2)-85=0

We multiply parentheses

4a+3a-6-85=0

We add all the numbers together, and all the variables

7a-91=0

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

7a=91

a=91/7

a=13

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