a-1=4(a-4)

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Solution for a-1=4(a-4) equation: 



a-1=4(a-4)

We move all terms to the left:

a-1-(4(a-4))=0



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

4(a-4)

We multiply parentheses

4a-16

Back to the equation:

-(4a-16)



We get rid of parentheses

a-4a+16-1=0

We add all the numbers together, and all the variables

-3a+15=0

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

-3a=-15

a=-15/-3

a=+5

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