Question

Solve for b.
5/b = 45/36
b = ?

Answer 1

b=4

Explanation:

Format rewrite:

Solve for 'b', when
`(5)/(b) =(45)/(36)\\\\\mathrm{Apply\:fraction\:cross\:multiply:\:if\:}(a)/(b)=(c)/(d)\mathrm{\:then\:}a\cdot \:d=b\cdot \:c\\\\5\cdot \:36=b\cdot \:45\\180=b\cdot \:45\\\\divide(45)\\\\\\\\\\b=4`

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