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4.2/2=k
We move all terms to the left:
4.2/2-(k)=0
We add all the numbers together, and all the variables
-1k+4.2/2=0
We multiply all the terms by the denominator
-1k*2+4.2=0
Wy multiply elements
-2k+4.2=0
We move all terms containing k to the left, all other terms to the right
-2k=-4.2
k=-4.2/-2
k=2+0.2/2
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