900=20(k-915)

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Solution for 900=20(k-915) equation: 



900=20(k-915)

We move all terms to the left:

900-(20(k-915))=0



We calculate terms in parentheses: -(20(k-915)), so:

20(k-915)

We multiply parentheses

20k-18300

Back to the equation:

-(20k-18300)



We get rid of parentheses

-20k+18300+900=0

We add all the numbers together, and all the variables

-20k+19200=0

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

-20k=-19200

k=-19200/-20

k=+960

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