NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 8: Rational Numbers - Problems and Solutions
Question 81

Question. 81

Simplify:

(i) \(\dfrac{13}{11} \times \dfrac{-14}{5} + \dfrac{13}{11} \times \dfrac{-7}{5} + \dfrac{-13}{11} \times \dfrac{34}{5}\)

(ii) \(\dfrac{6}{5} \times \dfrac{3}{7} - \dfrac{1}{5} \times \dfrac{3}{7}\)

Answer:

(i) -13

(ii) \(\dfrac{3}{7}\)

Detailed Answer with Explanation:

(i) Simplify each product and add → -13. (ii) Take common factor (3/7) and simplify: (6/5-1/5)=1 → result 3/7.

NCERT Exemplar Solutions Class 7 – Mathematics – Unit 8: Rational Numbers – Problems and Solutions | Detailed Answers