2(5-5k)=90

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Solution for 2(5-5k)=90 equation: 



2(5-5k)=90

We move all terms to the left:

2(5-5k)-(90)=0

We add all the numbers together, and all the variables

2(-5k+5)-90=0

We multiply parentheses

-10k+10-90=0

We add all the numbers together, and all the variables

-10k-80=0

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

-10k=80

k=80/-10

k=-8

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