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Division of Fractions

Question 5ii ...

Question

Question 5(ii)
Find
$(b) \frac{2}{3} o f (i) 18 (i i) 27$

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Solution

$(b) (i) \frac{2}{3} o f 18 = \frac{2}{3} \times 18 = 2 \times 6 = 12 (i i) \frac{2}{3} o f 27 = \frac{2}{3} \times 27 = 2 \times 9 = 18$

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Question 36
Factorise:
(i) $a^{3} - 8 b^{3} - 64 c^{3} - 24 a b c$

(ii) $2 \sqrt{2} a^{3} + 8 b^{3} - 27 c^{3} + 18 \sqrt{2} a b c$

Question 68 (ii)

If $A = 3 x^{2} - 4 x + 1, B = 5 x^{2} + 3 x - 8$ and $C = 4 x^{2} - 7 x + 3$ , then find

B + C - A

Find:

(a) of (i) 24 (ii) 46

(b) of (i) 18 (ii) 27

(c) of (i) 16 (ii) 36

(d) of (i) 20 (ii) 35

Evaluate :
$(i) \frac{2}{3} - \frac{4}{5} (i i) \frac{- 4}{9} - \frac{2}{- 3} (i i i) - 1 - \frac{4}{9} (i v) \frac{- 2}{7} - \frac{3}{- 14} (v) \frac{- 5}{18} - \frac{- 2}{9} (v i) \frac{5}{21} - \frac{- 13}{42}$

Find:

(a) $\frac{1}{2}$ of (i) $24$ (ii) $46$

\frac{2}{3}

18

27

\frac{3}{4}

16

36

\frac{4}{5}

20

35

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Division of Fractions

Standard IX Mathematics

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