40-8a=4(1-5a)

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Solution for 40-8a=4(1-5a) equation: 



40-8a=4(1-5a)

We move all terms to the left:

40-8a-(4(1-5a))=0

We add all the numbers together, and all the variables

-8a-(4(-5a+1))+40=0



We calculate terms in parentheses: -(4(-5a+1)), so:

4(-5a+1)

We multiply parentheses

-20a+4

Back to the equation:

-(-20a+4)



We get rid of parentheses

-8a+20a-4+40=0

We add all the numbers together, and all the variables

12a+36=0

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

12a=-36

a=-36/12

a=-3

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