Question

Que. Verify that (x-y) - 1 not equal to x-1 - y-1 by taking x = - 2/7, y = - 4/3.​

Answer 1

Answer:

• $x = - \frac{ 2}{7} \\ y = - \frac{4}{3} \\ so \: (x - y) - 1 \\ | - \frac{2}{7} - ( - \frac{4}{3} ) | - 1 \\ | - \frac{2}{7} + \frac{4}{3} | - 1 \\ take \: the \: lcm \: of \: 7 \: and \: 3 = 21 \\ | \frac{ - 6 + 28}{21} | - 1 \\ \frac{22}{21} - \frac{1}{1} \\ now \: take \: the \: lcm \: of \: 21 \: and \: 1 = 21 \\ \frac{22 - 21}{21} = \frac{1}{21}$
• This is how you can solve the another one