(2a-1)+(6a-5)=90

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Solution for (2a-1)+(6a-5)=90 equation: 



(2a-1)+(6a-5)=90

We move all terms to the left:

(2a-1)+(6a-5)-(90)=0

We get rid of parentheses

2a+6a-1-5-90=0

We add all the numbers together, and all the variables

8a-96=0

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

8a=96

a=96/8

a=12

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