Question

$\frac{4}{2x + 3 } = \frac{5}{x + 4}$

Answer 1

by cross multiplication we get
4x+16=10x+15
6x=1
x=1/6

Answer 2

Hey!

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4/2x+3 = 5/x+4

By cross multiplication,

4(x+4) = 5(2x+3)
4x+16 = 10x+15
16-15=10-4x
1 = 6x
x= 1/6

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Hope it helps...!!!