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प्रश्न
Find (a + b) ÷ (a – b) if a = `1/2`, b = `2/3`
बेरीज
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उत्तर
a = `1/2`, b = `2/3`
a + b = `1/2 + 2/3`
= `(1 xx 3 + 2 xx 2)/6`
= `(3 + 4)/6`
= `7/6`
a − b = `1/2 - 2/3`
= `(1 xx 3 - 2 xx 2)/6`
= `(3 - 4)/6`
= `(-1)/6`
(a + b) ÷ (a − b) = `7/6 ÷ (-1)/6`
= `7/6 xx 6/(-1)`
= −7
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या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 1: Numbers - Exercise 1.2 [पृष्ठ १९]
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संबंधित प्रश्न
Find the value of `(-4)/5÷ (-3)`.
Evaluate:
`1 ÷ 1/3`
The product of two numbers is `(-4)/9`. If one of them is` (-2)/27`, find the other.
Evaluate:
`3/4 ÷ (-5/12)`
Divide:
`(-5)/8 "by" 1/4`
`3/4 ÷ (5/8 + 1/2)` = __________
Which of the following rational numbers is equal to its reciprocal?
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)` |
Find the reciprocal of the following:
`20/51 xx 4/91`
Taking x = `(-4)/9`, y = `5/12` and z = `7/18`, find (x – y) + z.
