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प्रश्न
______ × `((-2)/5)` = 1.
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उत्तर
`underlinebb((-5)/2) xx ((-2)/5)` = 1.
Explanation:
Let `x xx ((-2)/5) = 1`
⇒ `(-2x)/5 = 1`
⇒ –2x = 5 ...[By cross-multiplication]
⇒ `x = (-5)/2`
Hence, `(-5)/2 xx ((-2)/5) = 1`.
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संबंधित प्रश्न
Find the product:
`3/7 xx((-2)/5)`
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`5/6 "and" 8/9`
Multiply:
`(-7)/8 "and" 4`
Find the reciprocal(multiplicative inverse) of:
`3/5xx2/3`
For the pair of rational numbers, given below, verify that the multiplication is commutative.
`5/(-3) "and" 13/(-11)`
Verify that `("x"+"y")xx"z"="x"xx"z + y"xx"z",if`
`"x"=2," y"=4/5and "z"=3/(-10)`
Fill in the blank:
The reciprocal of a positive rational number is ………. and the reciprocal of a negative raitonal number is ……………
Fill in the blank:
The numbers ……….. and ……….. are their own reciprocals.
`3/4 xx ((-2)/3)` = ______.
`(-5)/3 xx ((-3)/5)` = ______.
