a) (4/5+0.2*0.4):11/100=8
1. 0.2*0.4=0.08
2. 4/5+0.08=0.88
3. 0.88:11/100=8
b) [9.7+(18.03-11/2)*10]:5=27
1. 18.03-11/2=12.53
2. 12.53*10=125.3
3. 9.7+125.3=135
4. 135:5=27
c) [3/4+(0.5)²³:(0.5)la a 21-0.2(3)]:23/5=0.1(6)
1. (0.5) la a 23: (0.5) la a 21=(0.5)²=0.25
2. 3/4+0.25=1
3. 1-0.2(3)=0.7(6)
4. 0.7(6):23/5=0.1(6)
sper ca te-am ajutat