Пошаговое объяснение:
1) 1,936 : 3. 1/5 = 1,936 : 16/5 = 1,936 : 3,2 = 0,605
2) 1,295 + 0,605 = 1,9
3) 1,9 * 1. 16/19 = 1. 9/10 * 35/19 = 19/10 * 35/19 = 35/10 = 3,5
4) 2. 14/27 - 3. 5/18 =
2. 28/54 - 3. 15/54 =
2. 28/54 - 2. 69/54 = -41/54
5) 4. 5/9 : (-41/54) = 41/9 : (-41/54) = 41/9 * (-54/41) =
-54/9 = -6
6) -2,5 + 3,5 = 1
7) 1 + (-6) = 1 - 6 = -5
ответ: -5
-2.5+(1.295+1.936:3 1/5)*1 16/19+4 5/9:(2 14/27-3 5/18) =-5
(1.295+1.936:3 1/5)=(1.295+1.936:3 1/5)= (1.295+1.936:16/5)=(1.295+1.936:3.2)=(1.295+0.605)=1.900
1.900×1 16/19= 19/10×35/19=35/10=3.5
4 5/9:(2 14/27-3 5/18) =4 5/9:(68/27-59/18)=4 5/9:((2×68-3*59)/54)=4 5/9:((136-177)/7)= 4 5/9 :(-41/54)=41/9:(-41/54)=-6
-2.5+3.5-6=-5
Пошаговое объяснение:
1) 1,936 : 3. 1/5 = 1,936 : 16/5 = 1,936 : 3,2 = 0,605
2) 1,295 + 0,605 = 1,9
3) 1,9 * 1. 16/19 = 1. 9/10 * 35/19 = 19/10 * 35/19 = 35/10 = 3,5
4) 2. 14/27 - 3. 5/18 =
2. 28/54 - 3. 15/54 =
2. 28/54 - 2. 69/54 = -41/54
5) 4. 5/9 : (-41/54) = 41/9 : (-41/54) = 41/9 * (-54/41) =
-54/9 = -6
6) -2,5 + 3,5 = 1
7) 1 + (-6) = 1 - 6 = -5
ответ: -5
Пошаговое объяснение:
-2.5+(1.295+1.936:3 1/5)*1 16/19+4 5/9:(2 14/27-3 5/18) =-5
(1.295+1.936:3 1/5)=(1.295+1.936:3 1/5)= (1.295+1.936:16/5)=(1.295+1.936:3.2)=(1.295+0.605)=1.900
1.900×1 16/19= 19/10×35/19=35/10=3.5
4 5/9:(2 14/27-3 5/18) =4 5/9:(68/27-59/18)=4 5/9:((2×68-3*59)/54)=4 5/9:((136-177)/7)= 4 5/9 :(-41/54)=41/9:(-41/54)=-6
-2.5+3.5-6=-5