geometry
posted by Brandon .
Can someone explain how you get the answer b/15.
Given the proportion a/b=8/15, what ratio completes the equivalent proportion a/8=?/?.
I'm not sure if there is an equation or step you use to get the answer.

a/b = 8/15
multiply by b to get
a = 8b/15
divide by 8 to get
a/8 = b/15
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