3k+30=k+120

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Solution for 3k+30=k+120 equation: 



3k+30=k+120

We move all terms to the left:

3k+30-(k+120)=0

We get rid of parentheses

3k-k-120+30=0

We add all the numbers together, and all the variables

2k-90=0

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

2k=90

k=90/2

k=45

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