Question

Scrieti inversul fiecarui numar de mai jos:
a) 5; 2supra3:5supra 6: 1 supra 4: 8·2supra3: 2·7 supra 5.
b) (5)la puterea-1: (10)la puterea -1: (3 supra 4)la puterea-1: (23 supra 1)la puterea-1
c) 7supra4+13 supra 2: 45supra 6-3supra5.

Answer 1

a)5=1/5
2/3=3/2
5/6=6/5
1/4=4
8*2/3=16/3=3/16
2*7/5=5/14
b)5^(-1)=5
10^(-1)=10
(3/4)6(-1)=4/3
23/1^(-1)=1/23
c)7/4+13/2=7/4+26/4=33/4⇒inverssul este 4/33
54/6-3/5=(aducem la ac numitor)=252/36⇒inverssul este36/252