If a \times b = \frac{ab}{a+ b }, find the value of 3 \times (3 \times - 1).

Simplification Test 1

Question : 19 of 40

Marks: +1, -0

a × b = {ab}/{a+ b }

, find the value of

3 × (3 × - 1)

Solution:

a × b = {ab}/ {a+ b }

∴3 × (3 × - 1)

=3×{-3}/2={-9\/2}/{3\/2}=-3

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