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Question
Find the product of:
`(-4)/5` and `(-5)/12`
Sum
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Solution
Given, `(-4)/5` and `(-5)/12`
∴ Product of rational numbers = `"Product of numerators"/"Product of denominators"`
= `((-4) xx (-5))/(5 xx 12)`
= `20/60`
= `(20 ÷ 20)/(60 ÷ 20)` ...[Dividing numerator and denominator by 20]
= `1/3`
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Chapter 8: Rationals Numbers - Exercise [Page 249]
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RELATED QUESTIONS
Find the value of `(-4)/5÷ (-3)`.
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The product of two rational numbers is -2. If one of them is `4/7`, find the other.
The product of two numbers is `(-4)/9`. If one of them is` (-2)/27`, find the other.
By what number must `(-3)/4` be multiplied so that the product is `(-9)/16?`
Find (a + b) ÷ (a – b) if a = `1/2`, b = `2/3`
The reciprocal of ______ does not exist.
`(-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)` |
Simplify:
`3/7 ÷ (21/-55)`
