3/2 = (9/10)k
Isolate the k. Multiply 10/9 to both sides
(3/2)(10/9) = (9/10)(10/9)k
Simplify
(3/2)(10/9) = k
3/9 = 1/3
10/2 = 5
5 x 1/3 = 5/3
k = 5/3, or 1 2/3
hope this helps
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