Question

If a =3 /7 , b =21 /27 , verify the following: a × b = b × a.​

Answer 1

Step-by-step explanation:

First, we will solve the LHS:

a × b = $\frac{3}{7}$ × $\frac{21}{27}$ = $\frac{3}{9}$

Now, we will solve RHS:

b × a = $\frac{21}{27}$ × $\frac{3}{7}$ = $\frac{3}{9}$

Since LHS = RHS, it has been verified.

∴ a × b = b × a

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Lilac584

Answer 2

Step-by-step explanation:

a×b= (3/7)×(21/27)

= 1/3

Now,

b×a= (21/27)×(3/7)

= 1/3

Hence,

a×b=b×a