k+9=-10-2k-2

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Solution for k+9=-10-2k-2 equation: 



k+9=-10-2k-2

We move all terms to the left:

k+9-(-10-2k-2)=0

We add all the numbers together, and all the variables

k-(-2k-12)+9=0

We get rid of parentheses

k+2k+12+9=0

We add all the numbers together, and all the variables

3k+21=0

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

3k=-21

k=-21/3

k=-7

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