2.1=4.2+0.7k

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Solution for 2.1=4.2+0.7k equation: 



2.1=4.2+0.7k

We move all terms to the left:

2.1-(4.2+0.7k)=0

We add all the numbers together, and all the variables

-(0.7k+4.2)+2.1=0

We get rid of parentheses

-0.7k-4.2+2.1=0

We add all the numbers together, and all the variables

-0.7k-2.1=0

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

-0.7k=2.1

k=2.1/-0.7

k=-3+4.4408920985E-16/0.7

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