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2-7k=-50-9k
We move all terms to the left:
2-7k-(-50-9k)=0
We add all the numbers together, and all the variables
-7k-(-9k-50)+2=0
We get rid of parentheses
-7k+9k+50+2=0
We add all the numbers together, and all the variables
2k+52=0
We move all terms containing k to the left, all other terms to the right
2k=-52
k=-52/2
k=-26
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