-(3a+1)=2(4a+5)

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Solution for -(3a+1)=2(4a+5) equation: 



-(3a+1)=2(4a+5)

We move all terms to the left:

-(3a+1)-(2(4a+5))=0

We get rid of parentheses

-3a-(2(4a+5))-1=0



We calculate terms in parentheses: -(2(4a+5)), so:

2(4a+5)

We multiply parentheses

8a+10

Back to the equation:

-(8a+10)



We get rid of parentheses

-3a-8a-10-1=0

We add all the numbers together, and all the variables

-11a-11=0

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

-11a=11

a=11/-11

a=-1

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