3(5+k)=12

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Solution for 3(5+k)=12 equation: 



3(5+k)=12

We move all terms to the left:

3(5+k)-(12)=0

We add all the numbers together, and all the variables

3(k+5)-12=0

We multiply parentheses

3k+15-12=0

We add all the numbers together, and all the variables

3k+3=0

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

3k=-3

k=-3/3

k=-1

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