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

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

User Euporie
by
7.9k points

2 Answers

2 votes
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
User Ifusion
by
7.3k points
5 votes
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
User TheBAST
by
8.0k points
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