1)(17/8-11/20):5/46=
=(85/40-22/40):5/46=
=63/40:5/46=63/40*46/5=
=(63*46)/(40*5)=1449/100=14,49
2)10^(-2)=1/10^2=1/100=0,01
10^(-3)=1/10^3=1/1000=0,001
10^(-4)=1/10^4=1/10000=0,0001
1)(17/8-11/20):5/46=
=(85/40-22/40):5/46=
=63/40:5/46=63/40*46/5=
=(63*46)/(40*5)=1449/100=14,49
2)10^(-2)=1/10^2=1/100=0,01
10^(-3)=1/10^3=1/1000=0,001
10^(-4)=1/10^4=1/10000=0,0001