Question 94 j Taking x -4-9- y -5-12 and z -7-18Find x -y - z

Given, x = 4/9, y = 5/12 and z = 7/18 Here, x ÷ (y ÷ z) = 4/9÷(5/12÷7/18 ) = 4/9÷(5/12×18/7 ) [∵ reciprocal of 7/18 = 18/7] = 4/9÷15/14 = 4/9×14 ...

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Reciprocal of a Number

Question 94 j...

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Question 94 (j)

Taking $x = \frac{- 4}{9}, y = \frac{5}{12}$ and $z = \frac{7}{18}$ .

Find $x \div (y \div z)$ .

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Question 94 (g)

Taking $x = \frac{- 4}{9}, y = \frac{5}{12}$ and $z = \frac{7}{18}$

Find $(x \div y) \times z$ .

Question 94 (h)

Taking $x = \frac{- 4}{9}, y = \frac{5}{12}$ and $z = \frac{7}{18}$

Find $(x - y) + z$ .

Question 94 (i)

Taking $x = \frac{- 4}{9}, y = \frac{5}{12}$ and $z = \frac{7}{18},$

Find $x + (y + z)$ .

Question 94 (k)

Taking $x = \frac{- 4}{9}, y = \frac{5}{12}$ and $z = \frac{7}{18},$ find
$x - (y + z)$

Verify the property: $x \times (y \times z) = (x \times y) \times z b y t a k i n g :$

(i) $x = \frac{- 7}{3}, y = \frac{12}{5}, z = \frac{4}{9}$

(ii) $x = 0, y = \frac{- 3}{5}, z = \frac{- 9}{4}$

(iii) $x = \frac{1}{2}, y = \frac{5}{- 4}, z = \frac{- 7}{5}$

(iv) $x = \frac{5}{7}, y = \frac{- 12}{13}, z = \frac{- 7}{18}$

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