Question

Using appropriate properties of rational numbers, find 2/3× −5/7 + 7/3 + 2/3×−2/7
(those little x are multiplication symbols) . Please show the working also.

Answer 1

Answer:

Ex 1.1, 1 - Chapter 1 Class 8 Rational Numbers. Last updated at June 22, 2018 by Teachoo. Slide1.JPG. Slide2.JPG. Slide3.

Answer 2

Answer:

$= \frac{2}{3} - \frac{5}{7} + \frac{2}{3} \times \frac{2}{7} \\ \\ = \frac{14 - 15}{21} + \frac{4}{21} \\ \\ = \frac{14 - 15 + 4}{21} \\ \\ = \frac{3}{21} \\ \\ = \frac{1}{7}$

Hope it will be helpful :)...✍️