Your Progress - Chapter 80% complete
1Exercise 8.21 questions
Q.1-4Exercise 8.2 asks students to add, subtract, multiply and divide rational numbers in the listed subparts.v
Solution
For addition and subtraction use a common denominator. For multiplication multiply numerators and denominators. For division multiply by the reciprocal of the divisor.
Answer:
1. (i) $-\frac{3}{2}$ (ii) $\frac{34}{15}$ (iii) $\frac{17}{30}$ (iv) $\frac{82}{99}$ (v) $-\frac{26}{57}$ (vi) $-\frac{2}{3}$ (vii) $\frac{34}{15}$.
2. (i) $-\frac{13}{72}$ (ii) $\frac{23}{63}$ (iii) $\frac{1}{195}$ (iv) $-\frac{89}{88}$ (v) $-\frac{73}{9}$.
3. (i) $-\frac{63}{8}$ (ii) $-\frac{27}{10}$ (iii) $-\frac{54}{55}$ (iv) $-\frac{6}{35}$ (v) $\frac{6}{55}$ (vi) 1.
4. (i) $-6$ (ii) $-\frac{3}{10}$ (iii) $\frac{4}{15}$ (iv) $-\frac{1}{6}$ (v) $-\frac{14}{13}$ (vi) $\frac{91}{24}$ (vii) $-\frac{15}{4}$.