47=-2(1-a)+3(1+7a)

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Solution for 47=-2(1-a)+3(1+7a) equation: 



47=-2(1-a)+3(1+7a)

We move all terms to the left:

47-(-2(1-a)+3(1+7a))=0

We add all the numbers together, and all the variables

-(-2(-1a+1)+3(7a+1))+47=0



We calculate terms in parentheses: -(-2(-1a+1)+3(7a+1)), so:

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

We multiply parentheses

2a+21a-2+3

We add all the numbers together, and all the variables

23a+1

Back to the equation:

-(23a+1)



We get rid of parentheses

-23a-1+47=0

We add all the numbers together, and all the variables

-23a+46=0

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

-23a=-46

a=-46/-23

a=+2

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