10(k-10)=-30

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Solution for 10(k-10)=-30 equation: 



10(k-10)=-30

We move all terms to the left:

10(k-10)-(-30)=0

We add all the numbers together, and all the variables

10(k-10)+30=0

We multiply parentheses

10k-100+30=0

We add all the numbers together, and all the variables

10k-70=0

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

10k=70

k=70/10

k=7

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