Question

Pl answer important

Answer 1

Please mark it as brainliest.

Answer 2

given, 3% of (b-a) = 4%of (b+a)
i.e.
3(b-a)/100 = 4(b+a)/100
3b-3a=4b+4a
-3a-4a=4b-3b
-7a=b

Now
(3a-b)/(a+b)
=(3a+7a)/(a -7a)
=10a/-6a
=(-5/3)