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kotykmax [81]
3 years ago
7

9(11-k)=3(3k-9) plz help solve for k

Mathematics
2 answers:
melisa1 [442]3 years ago
8 0
Distribute...
99 - 9k = 9k - 27
Add 27 to both sides
126 - 9k = 9k
Add 9k to both sides
126 = 18k
Divide by 18
k = 126 / 18 = 7
poizon [28]3 years ago
4 0
9(11-k)=3(3k-9)
9(11)-9(k)=3(3k)-3(9)
99-9k=9k-27
     +9k +9k
99=18k-27
+27       +27
126=18k
-----   -----
18      18
7=k 
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