a/b=5/7 then the value 63a-2b/18b-14a is equal to

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Solution

(63a-2b)/(18b-14a) ----(1)
we know
a/b=5/7
b/a=7/5
divide numeratot and debominator of (1) by b
Then we get
(63a/b -2)/(18-14a/b)
=(635/7 -2)/(18-145/7)
=(45-2 )/(18-10)
=43/8
=5.375

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