-3=-(1+6a)+4(a+3)

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Solution for -3=-(1+6a)+4(a+3) equation: 



-3=-(1+6a)+4(a+3)

We move all terms to the left:

-3-(-(1+6a)+4(a+3))=0

We add all the numbers together, and all the variables

-(-(6a+1)+4(a+3))-3=0



We calculate terms in parentheses: -(-(6a+1)+4(a+3)), so:

-(6a+1)+4(a+3)

We multiply parentheses

-(6a+1)+4a+12

We get rid of parentheses

-6a+4a-1+12

We add all the numbers together, and all the variables

-2a+11

Back to the equation:

-(-2a+11)



We get rid of parentheses

2a-11-3=0

We add all the numbers together, and all the variables

2a-14=0

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

2a=14

a=14/2

a=7

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