Math, asked by tokaians, 1 year ago

If a:b=3:11, find (15a - 3b) : (9a + 5b)

Answers

Answered by krish43

14

a:b=3:11
a=3x
b=11x

=(15a-3b):(9a+5b)
=15(3x)-3(11x):9(3x)+5(11x)
=45x-33x:27x55x
=78x:82x
=39:41

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