Question

Efectuati scaderile :
a) 3 supra4 - 1 supra 2
b) 5 supra 6 - (- 1 supra 4) ;
c) -3 supra 4 - 1 supra 2;
d) -45 supra 16 -67 supra 24 ;
e( 0.5-0.49;

Answer 1

a) 3/4 - 1/2=3/4-2/4=1/4
b) 5/6 - (- 1/4)=5/6+1/4=(5*2+1*3)/12=13/12
c) -3/4 - 1/2=-3/4-2/4=-5/4
d) -45/16 -67/24=(-45*3-67*2)/48=(-135-134)/48=269/48
e) 0.5-0.49=5/10-49/100=(5*10-49)/100=(50-49)/100=1/100=0,01