Question

Ex 6.cine rezolva corect si complet are coroana + puncte,urgent pana in ora 1-1 jumatate.

Answer 1

Răspuns:

Explicație pas cu pas:

6)

a)

2,(3) = (23-2)/9= 21⁽³/9⁽³= 7/3 .............se simplifica cu 3

b)

2,5 -(12-1)/9

= 2,5-11/9

= ⁹⁾25/10-¹⁰⁾11/9

= 225/90-111/90

= 114⁽³/90⁽³

= 38⁽²/30⁽²

=19/15

-

c)

48/10-(26-2)/9

=⁹⁾48/10-¹⁰⁾24/9

=432/90-240/90

= 192⁽³/90⁽³

= 64⁽²/30⁽²

=32/15

-

d)

=(106-10)/90-(43-4)/9

= 96/90-¹⁰⁾39/9

=96/90-390/90

= - 294⁽³/90⁽³

=-98⁽²/30⁽²

= - 49/15

-

e)

=(283-28)/90-(36-3)/9

= 255⁽¹⁵/90⁽¹⁵-33⁽³/9⁽³

=17/6-²⁾11/3

=17/6-22/6

= -5/6

-

f)

=(227-22)/90 -(35-3)/9

= 205⁽⁵/90⁽⁵-32/9

= 41/18-²⁾32/9

= 41/18-64/18

= - 23/18