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4.2+5=2.2k+4
We move all terms to the left:
4.2+5-(2.2k+4)=0
We add all the numbers together, and all the variables
-(2.2k+4)+9.2=0
We get rid of parentheses
-2.2k-4+9.2=0
We add all the numbers together, and all the variables
-2.2k+5.2=0
We move all terms containing k to the left, all other terms to the right
-2.2k=-5.2
k=-5.2/-2.2
k=2+0.8/2.2
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