2(k+20)=90

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Solution for 2(k+20)=90 equation: 



2(k+20)=90

We move all terms to the left:

2(k+20)-(90)=0

We multiply parentheses

2k+40-90=0

We add all the numbers together, and all the variables

2k-50=0

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

2k=50

k=50/2

k=25

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