18.9=4.21-k/0.3

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Solution for 18.9=4.21-k/0.3 equation: 



18.9=4.21-k/0.3

We move all terms to the left:

18.9-(4.21-k/0.3)=0

We add all the numbers together, and all the variables

-(-k/0.3+4.21)+18.9=0

We get rid of parentheses

k/0.3-4.21+18.9=0

We multiply all the terms by the denominator


k-(4.21)*0.3+(18.9)*0.3=0

We add all the numbers together, and all the variables

k+4.407=0

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

k=-4.407

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