-3(10k+5)=-105

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Solution for -3(10k+5)=-105 equation: 



-3(10k+5)=-105

We move all terms to the left:

-3(10k+5)-(-105)=0

We add all the numbers together, and all the variables

-3(10k+5)+105=0

We multiply parentheses

-30k-15+105=0

We add all the numbers together, and all the variables

-30k+90=0

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

-30k=-90

k=-90/-30

k=+3

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