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प्रश्न
Taking x = `(-4)/9`, y = `5/12` and z = `7/18`, find the reciprocal of x + y.
उत्तर
Given, x = `(-4)/9`, y = `5/12` and z = `7/18`
Here, x + y = `(-4)/9 + 5/12` = `(-4 xx 4 + 5 xx 3)/36` ......[∵ LCM of 9 and 12 = 36]
⇒ x + y = `(-16 + 15)/36 = (-1)/36`
∴ Reciprocal of x + y = `1/((-1)/36)` = –36
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संबंधित प्रश्न
Evaluate:
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m and n are two rational number such that
`"m"xx"n"=-25/9`
if `"m"=5/3`, find `"n"`.
`
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`- 3/4 "by" - 9/16`
Find (m + n) ÷ (m - n), if:
m = `2/3` and n = `3/2`
Find (m + n) ÷ (m - n), if:
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`(-3)/7 ÷ ((-7)/3)` = ______.
Match the following:
| Column I | Column II |
| (i) `a/b ÷ a/b` | (a) `(-a)/b` |
| (ii) `a/b ÷ c/d` | (b) –1 |
| (iii) `a/b ÷ (-1)` | (c) 1 |
| (iv) `a/b ÷ (-a)/b` | (d) `(bc)/(ad)` |
| (v) `b/a ÷ (d/c)` | (e) `(ad)/(bc)` |
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