Question

If a/b = 7/3, then find the value of the ratio:
5a + 3b / 5a – 3b
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Answer 1

Answer:

a/b=7/3

let the common multiple be m

then a=7m,b=3m

5a+3b/5a-3b= 5(7m)+3(3m)/5(7m)-3(3m)

=35m+9m/35m-9m

=44m/26m

=44/26

=2*22/2*13=22/13

thus 5a+3b/5a-3b = 22:13