Question

b
18
9.
(-15)(-6) = 90 and 18x5 = 90
(-15)x(-6) =18x5
-15 5
-6
-15 5
Hence,
and are equivalent.
18 -6
18
10
EXAMPLE 12
-3
х
Find x such that
and
8 -24
are equivalent rational numbers.
1
Solution
х
-3
It is given that
8
-3
- 24
x
8 x x = (-3) (-24)
8
- 24
8xx = 72
72
х
=9.
8
Hence, x = 9.
EXERCISE 4A
1. What are rational numbers? Give examples of five positive and five negative ration
numbers. Is there any rational number which is neither positive nor negative? Name it
2. Which of the following are rational numbers?
5
-6
7
-8
(iv)
(v) 6
15
11
-12
0
1
(vi) -3 (vii) 0
(viii)
(ix)
1
(x)
0​

Answer 1

Answer:

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Explanation:

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