NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 8: Rational Numbers - Problems and SolutionsQuestion 79
Class 7 - Mathematics - Unit 8: Rational Numbers - Problems and Solutions
Question. 79
Solve:
(i) \(\dfrac{29}{4} - \dfrac{30}{7}\)
(ii) \(\dfrac{5}{13} - \dfrac{-8}{26}\)
Answer:
(i) \(\dfrac{83}{28}\)
(ii) \(\dfrac{9}{13}\)
Detailed Answer with Explanation:
(i) Take LCM 28 → (203-120)/28=83/28. (ii) Convert second term to denominator 26=2/13. → 5/13+2/13=7/13? Correction → -(-8/26)=+8/26=4/13, 5/13+4/13=9/13.