k+2+2k-2=90

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Solution for k+2+2k-2=90 equation: 



k+2+2k-2=90

We move all terms to the left:

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

We add all the numbers together, and all the variables

3k-90=0

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

3k=90

k=90/3

k=30

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