Question

Ma ajutați la un ex? ​

Answer 1

Răspuns:

Explicație pas cu pas:

a)

= -⁹⁾1-5/9

=-9/15-5/15

=-14/15

-

b)

=⁷⁾7/2-²⁾5/7

= 49/14-10/14

= 39/14

-

c)

=  -³⁾21/5+61/15

= -63/15+61/15

= - 2/15

-

d)

= ²⁾5/18-³⁾7/12 -⁴⁾1/9

= 10/36-21/36-4/36

= -15/36

-

e)

= -¹²⁾1/5-⁶⁾3/10-⁴⁾7/15+³⁾19/20

=-12/60-18/60 -28/60+57/60

=-30/60-28/60+57/60

= -58/60+57/60

=-1/60

f)

=-19/12+( -³⁾5/8-7/24)

= -19/12 +( -15/24-7/24)

= -19/12 +(- -22/24)

= -²⁾19/12 -22/24

=-38/24-22/24

=-60/ 24

-

g)

= -¹⁰⁸⁾8/5+⁵⁴3/10-⁹⁾72/60+⁶⁾93/90

= -864/540+172/540-648/540+558/540

= -672/540-648/540+558/540

= -1320+558/540

= - 762⁽²/540⁽²

= -381⁽³/270⁽³

=-127/90