-3(a+5)-1=-(2a+7)+1

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Solution for -3(a+5)-1=-(2a+7)+1 equation: 



-3(a+5)-1=-(2a+7)+1

We move all terms to the left:

-3(a+5)-1-(-(2a+7)+1)=0

We multiply parentheses

-3a-(-(2a+7)+1)-15-1=0



We calculate terms in parentheses: -(-(2a+7)+1), so:

-(2a+7)+1

We get rid of parentheses

-2a-7+1

We add all the numbers together, and all the variables

-2a-6

Back to the equation:

-(-2a-6)



We add all the numbers together, and all the variables

-3a-(-2a-6)-16=0

We get rid of parentheses

-3a+2a+6-16=0

We add all the numbers together, and all the variables

-1a-10=0

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

-a=10

a=10/-1

a=-10

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