2+4(1-9k)=20.5

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Solution for 2+4(1-9k)=20.5 equation: 



2+4(1-9k)=20.5

We move all terms to the left:

2+4(1-9k)-(20.5)=0

We add all the numbers together, and all the variables

4(-9k+1)+2-(20.5)=0

We add all the numbers together, and all the variables

4(-9k+1)-18.5=0

We multiply parentheses

-36k+4-18.5=0

We add all the numbers together, and all the variables

-36k-14.5=0

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

-36k=14.5

k=14.5/-36

k=-5.8/14.4

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