Question

If a/b=3/7then find value of a+3b\a-3b

Answer 1

Answer:

a/b = 3/7

a/3b = 1/7

Using componendo and dividendo rule

a/b = c/d

Can be written as

a+b/a-b = c+d/c-d

As a/3b = 1/7

a+3b/a-3b = 1+7/1-7

a+3b/a-3b = 8/-6 = - 4/3

a+3b/a-3b = - 4/3

Answer 2

Answer:

given

a=3

b=7

Step-by-step explanation:

a+3b\a-3b

3+3×7\a-3×7

3+21\3-21

27/-18

3/-2