Ответ:
а)1
б)13/41
в)1.26/189
Пошаговое объяснение:
а)(3-1,5)*(1-1/3)=1
1)3-1,5=1,5
2)1-1/3=3/3-1/3=2/3
3)1,5*2/3=15/10*2/3=5/5*1/1=5/5=1
б)1)1.2/7+5.3/14=6.4/14+3/14=6.7/14=6.1/2
2)7.1/12-3.2/3=4.1/12-8/12=3.13/12-8/12=3.5/12
3)6.1/2:3.5/12=13/12:41/12=13/12*12/41=13/1*1/41=13/41
в) 1)7,4-1.4/9=6.4/10-4/9=5.14/10-4/9=5.126/90-40/90=
5.86/90
2)5.43/45:5,25=268/45:525/100=268/45*100/525=
=268/45*4/21=1075/945=1.130/945=1.26/189