Question

Verify the property x × y = y × x for x = -5/7 and y = 35/21

Answer 1

Property to be proved : x × y = y × x

Given : x = -5/7 and y = 35/21

LHS = x × y

$= \frac{ - 5}{7} \times \frac{35}{21} = - 5 \times \frac{5}{21} = \frac{ - 25}{21}$

RHS = y × x

$= \frac{35}{21} \times \frac{ - 5}{7} = \frac{5}{21} \times - 5 = \frac{ - 25}{21}$

Since LHS = RHS,

Hence proved..

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