30k+90k=20k+130

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Solution for 30k+90k=20k+130 equation: 



30k+90k=20k+130

We move all terms to the left:

30k+90k-(20k+130)=0

We add all the numbers together, and all the variables

120k-(20k+130)=0

We get rid of parentheses

120k-20k-130=0

We add all the numbers together, and all the variables

100k-130=0

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

100k=130

k=130/100

k=1+3/10

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