Question

Calculati: 1e) [(15*3-25+13*20):28+]:7-[(19+21):4-9], 2f) [12(1660:83+154:11):17+125:25]:29-1, 3g) {36*63-8+4[73-3(242:22-162:54)}:2312+23. Ajutatima va rog

Answer 1

1e) [(15*3-25+13*20):28+4]:7-[(19+21):4-9]=
=[(45-25+260):28+4]:7-(40:4-9)=
=((20+260):28+ 4 ):7-(10-9)=
=(280:28+ 4 ):7-1=
=(10+4 ):7-1=
=2-1=1

2f) [12*(1660:83+154:11):17+125:25]:29-1=
=[12*(20+14):17+5]:29-1=
=(12*34:17+5):29-1=
=(12*2+5):29-1=
=(24+5):29-1=
=29:29-1=
=1-1=0

3g) {36*63-8+4[37-3(242:22-162:54)]}:2312+23=
=[2268-8+4(37-3(11-3)]:2312+23=
=[2260+4(37-3*8)]:2312+23=
=[2260+4(37-24)]:2312+23=
=(2260+4*13):2312+23=
=(2260+52):2312+23=
=2312:2312+23=
=1+23=24