Пошаговое объяснение:
1) 2,1:(-0,7)= -3
2) - 1,25:2,5= -0,5
3) 14,7:(-7)= -2,1
4) -2,5*(-0,4)= 1
5) -1 3\8 :3\8= -11/8 * 8/3 = -11/3 = -3 2/3
6) -4\7: (-1. 2\7)= -4/7 *(-7/9) = 4/9
7) 3,9*(-2\3)= 39/10 *(-2/3) = -13/5 = -2 3/5
8) -2,8*(-1,1\7)= -28/10 *(-8/7) = 16/5 = 3 1/5
9) 1,2\5*0,125= 7/5 * 125/1000 = 175/1000 = 7/40
10)4\7*(-4,2)= 4/7 *(-42/10) = -12/5 = -2 2/5
2.1:(-0.7)= -1.47
-1.25:2.5= -0.5
14.7:(-7)= -2.1
-2.5*(-0.4)= 1
-13/8: 3/8= - 13/8*8/3= - 13/3
-4/7: (-1.2/7)= 4/7:9/7 = 4/7*7/9 = 4/9
3.9*(-2/3)= -39/10*2/3 = - 13/5
-2.8*(-1.1/7)= 28/10*8/7 = 16/5 = 3.1/5
1.2/5*0.125= 1.4*0.125= 0.175
4/7*(-4.2)= - 4/7*42/10 = - 12/5 = - 2.2/5
Пошаговое объяснение:
1) 2,1:(-0,7)= -3
2) - 1,25:2,5= -0,5
3) 14,7:(-7)= -2,1
4) -2,5*(-0,4)= 1
5) -1 3\8 :3\8= -11/8 * 8/3 = -11/3 = -3 2/3
6) -4\7: (-1. 2\7)= -4/7 *(-7/9) = 4/9
7) 3,9*(-2\3)= 39/10 *(-2/3) = -13/5 = -2 3/5
8) -2,8*(-1,1\7)= -28/10 *(-8/7) = 16/5 = 3 1/5
9) 1,2\5*0,125= 7/5 * 125/1000 = 175/1000 = 7/40
10)4\7*(-4,2)= 4/7 *(-42/10) = -12/5 = -2 2/5
2.1:(-0.7)= -1.47
-1.25:2.5= -0.5
14.7:(-7)= -2.1
-2.5*(-0.4)= 1
-13/8: 3/8= - 13/8*8/3= - 13/3
-4/7: (-1.2/7)= 4/7:9/7 = 4/7*7/9 = 4/9
3.9*(-2/3)= -39/10*2/3 = - 13/5
-2.8*(-1.1/7)= 28/10*8/7 = 16/5 = 3.1/5
1.2/5*0.125= 1.4*0.125= 0.175
4/7*(-4.2)= - 4/7*42/10 = - 12/5 = - 2.2/5
Пошаговое объяснение: