ML Aggarwal CBSE Solutions Class 8 Math 1st Chapter Rational Numbers Exercise 1.3
(4) (i) 12
=) The multiplicative inverse of 12 is 1/12
(ii) 2/3
=) The multiplicative inverse of 2/3 is 3/2
(iii) -4/7
=) The multiplicative inverse of -4/7 is 7/-4
(iv) -3/8 x (-7/13)
=) -3/8 x -7/13
= 21/104
The multiplicative inverse of 21/104 is 104/21
(7) (i) Zero has no reciprocal
(ii) 1, (-1)
(iii) x2
(iv) 1
(v) a negative rational number
(9) The additive inverse of 9 = – 9
The multiplicative inverse of 9 = 1/9
∴ Sum of additive inverse & multiplicative inverse
= -9 + 1/9
= -81+1/9
= -82/9
= -8~1/9
(10) The additive inverse of -3/7 = -(–3/7)
The multiplicative inverse of -3/7 = -7/3
∴ Sum of both = 3/7 x (-7/3)
= -1
can u do fr 9th also pls
9th class?
yes pls