Вычислить: 3.8*(-23/4)+13.3/5: 1.7/(4.3-7.85): 7.1; 2)4/5-0.9-0.225)*8/13/2/5: 8,3)6.2/3*(-1.3)+16.5: (-2.3/4)/1/3-8/15; 4)4/5: 2.2/3-3.3/4/1/6-1/15 ; №600.вычислить: .6)*9/(-1.5)/(-2.7)*(-0.8)*(-1.4); .1)*(-9.3)/(3.1)*3..1); .2-4)*8.1*(0.14-0.61)/0.9*(-3.2)*(0.75); 4)(3.5-5.4)*(3.4-1.2)/(4.8-7)*1.9
278
353
Ответы на вопрос:
3.8*(-23/4)+13.3/5: 1.7/(4.3-7.85): 7.1=-3.8*5,75+2,66: 1.7/(-3,55): 7.1= =-3.8*5,75+2,66: 1.7/(-3,55): 7.1=-21,85-2,66*3,55/1,7*1/7,1=-21,85-2,66*0,5/1,7==-21,85-1,33/1,7=-21 85/100-133/170=-21 17/20-133/170=-21 289/340-266/340= =-21 555/340=-22 215/340=-22 43/68 2)4/5-0.9-0.225)*8/13/2/5: 8= скобка не понятная 3)6.2/3*(-1.3)+16.5: (-2.3/4)/1/3-8/15=-8,06/3-16.5: 0,575/1/3-8/15= =-806/300-16,5/0,575/3-8/15=-403/150-5,5/0,575-80/150=-483/150-5500/575= =-161/50-220/23=-3 11/50-9 13/23=-3 253/1150-9 650/1150=-12 903/1150 4)4/5: 2.2/3-3.3/4/1/6-1/15=4/5*3/2,2-3,3/24-1/15=4/5*30/22-33/240-1/15= =2/1*6/11-11/80-1/15=12/11-11/80-1/15=12/11-165/1200-80/1200=12/11-245/1200=1 1/11-49/240=1 240/2640-539/2640=1-299/2640=-2341/2640 ; №600.вычислить: .6)*9/(-1.5)/(-2.7)*(-0.8)*(-1.4)=5.6*6/(-2.7)*0.8*1.4= =-37,632/2,7=-37632/2700=-9408/675=-3136/225=-13 211/225 .1)*(-9.3)/(3.1)*3..1)=(-12.1)*(-3)*3..1)=119,79+1,1=120,89 .2-4)*8.1*(0.14-0.61)/0.9*(-3.2)*(0.75)=(-7,2)*8.1*(-0.47)/0.9*(-3.2)*(0.75)= =8*8.1*0.47*(-3.2)*0.75=-73,0944 4)(3.5-5.4)*(3.4-1.2)/(4.8-7)*1.9=(-1,9)*2,2/(-2,2)*1.9=1,9*1,9=3,61
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