40k+90k=30k+100

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Solution for 40k+90k=30k+100 equation: 



40k+90k=30k+100

We move all terms to the left:

40k+90k-(30k+100)=0

We add all the numbers together, and all the variables

130k-(30k+100)=0

We get rid of parentheses

130k-30k-100=0

We add all the numbers together, and all the variables

100k-100=0

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

100k=100

k=100/100

k=1

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