50=-(1+7a)+4(3a+4)

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Solution for 50=-(1+7a)+4(3a+4) equation: 



50=-(1+7a)+4(3a+4)

We move all terms to the left:

50-(-(1+7a)+4(3a+4))=0

We add all the numbers together, and all the variables

-(-(7a+1)+4(3a+4))+50=0



We calculate terms in parentheses: -(-(7a+1)+4(3a+4)), so:

-(7a+1)+4(3a+4)

We multiply parentheses

-(7a+1)+12a+16

We get rid of parentheses

-7a+12a-1+16

We add all the numbers together, and all the variables

5a+15

Back to the equation:

-(5a+15)



We get rid of parentheses

-5a-15+50=0

We add all the numbers together, and all the variables

-5a+35=0

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

-5a=-35

a=-35/-5

a=+7

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