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10k+2+20k-60=20
We move all terms to the left:
10k+2+20k-60-(20)=0
We add all the numbers together, and all the variables
30k-78=0
We move all terms containing k to the left, all other terms to the right
30k=78
k=78/30
k=2+3/5
| 7+6=(1+4e) | | n/5+5=21 | | 6/x(3)=1 | | 4x=2=10 | | x-9/4=7(4) | | x-9/4=7x4 | | 5p=3p-4 | | x=9/4=7 |