(a-1)5=115

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Solution for (a-1)5=115 equation: 



(a-1)5=115

We move all terms to the left:

(a-1)5-(115)=0

We multiply parentheses

5a-5-115=0

We add all the numbers together, and all the variables

5a-120=0

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

5a=120

a=120/5

a=24

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