30-k+90=20k+110

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Solution for 30-k+90=20k+110 equation: 



30-k+90=20k+110

We move all terms to the left:

30-k+90-(20k+110)=0

We add all the numbers together, and all the variables

-1k-(20k+110)+120=0

We get rid of parentheses

-1k-20k-110+120=0

We add all the numbers together, and all the variables

-21k+10=0

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

-21k=-10

k=-10/-21

k=10/21

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