0.7(1-0.85^n)/(1-0.85)=0.4

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Solution for 0.7(1-0.85^n)/(1-0.85)=0.4 equation: 



0.7(1-0.85^n)/(1-0.85)=0.4

We move all terms to the left:

0.7(1-0.85^n)/(1-0.85)-(0.4)=0

We add all the numbers together, and all the variables

0.7(1-0.85^n)/(0.15)-(0.4)=0

We add all the numbers together, and all the variables

0.7(1-0.85^n)/(0.15)-0.4=0

We multiply all the terms by the denominator


0.7(1-0.85^n)-(0.4)*(0.15)=0

We add all the numbers together, and all the variables

0.7(1-0.85^n)-0.06=0

We multiply parentheses

0n+0.7-0.06=0

We add all the numbers together, and all the variables

n+0.64=0

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

n=-0.64

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