30k+90=20k+12

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Solution for 30k+90=20k+12 equation: 



30k+90=20k+12

We move all terms to the left:

30k+90-(20k+12)=0

We get rid of parentheses

30k-20k-12+90=0

We add all the numbers together, and all the variables

10k+78=0

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

10k=-78

k=-78/10

k=-7+4/5

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