-1.5*4=-6
-1.5*(-100)=150
-1.5*0=0
-1.5*(-1/3)=0.5
-1.5*0.2=-0.3
42 - 15 + 35 = 42 + 20 = 62
50*5 - 90 + 520:20 = 250 - 90 + 26 = 160 + 26 = 186
270:(70:5+16)*2= 270:(14 + 16)*2 = 270:30*2 = 9*2 = 18
29*10:5= 290:5 = 58
1800:2-18*5+45:5= 900 - 90 + 9 = 810 + 9 = 819
(60:12+45)-(14*2+12)= (4+45)-(28+12) = 50-40 = 10
57+4*12-15= 57 +48 - 15 = 42 + 48 = 90
450-270+20*4= 180 + 80 = 260
58-(26+13)=
58 - (39) = 19
В приложении
///////////////////////
(8-4)минуты=360-120
4минуты=240м
расстояние=360+240=600м