A(n)=5(n-1)(-3)

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Solution for A(n)=5(n-1)(-3) equation: 



(A)=5(A-1)(-3)

We move all terms to the left:

(A)-(5(A-1)(-3))=0

We multiply parentheses ..

A-(5(-3A+3))=0



We calculate terms in parentheses: -(5(-3A+3)), so:

5(-3A+3)

We multiply parentheses

-15A+15

Back to the equation:

-(-15A+15)



We get rid of parentheses

A+15A-15=0

We add all the numbers together, and all the variables

16A-15=0

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

16A=15

A=15/16

A=15/16

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