Пошаговое объяснение:
№1
1) -3 1/3 : (-1 1/4) = -10/3 : (-5/4) = -10/3 * (-4/5) = 40/15
2) 40/15 : 8/25 = 40/15 * 25/8 = 5/3 * 5/1 = 25/3 = 8 1/3
№2
1) 1 3/4 - 3 1/6 = 1 9/12 - 3 2/12 = 1 9/12 - 2 14/12 = -1 5/12
2) 1 8/9 : (-1 5/12) = 17/9 : (-17/12) = 17/9 * (-12/17) = -12/9
3) -12/9 * (-9/16) = 12/16 = 3/4
№3
1) -48,75 : 3,9 = -12,5
2) -12,5 + 8 1/5 = -12,5 + 8,2 = -4,3
3) -4,3 * (-6,1) = 26,23
№4
1) -15 16/25 : 4,6 = -15,64 : 4,6 = -3,4
2) -3,4 + 7,1 = 3,7
3) 3,7 : (-0,37) = -10
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Answers & Comments
Пошаговое объяснение:
№1
1) -3 1/3 : (-1 1/4) = -10/3 : (-5/4) = -10/3 * (-4/5) = 40/15
2) 40/15 : 8/25 = 40/15 * 25/8 = 5/3 * 5/1 = 25/3 = 8 1/3
№2
1) 1 3/4 - 3 1/6 = 1 9/12 - 3 2/12 = 1 9/12 - 2 14/12 = -1 5/12
2) 1 8/9 : (-1 5/12) = 17/9 : (-17/12) = 17/9 * (-12/17) = -12/9
3) -12/9 * (-9/16) = 12/16 = 3/4
№3
1) -48,75 : 3,9 = -12,5
2) -12,5 + 8 1/5 = -12,5 + 8,2 = -4,3
3) -4,3 * (-6,1) = 26,23
№4
1) -15 16/25 : 4,6 = -15,64 : 4,6 = -3,4
2) -3,4 + 7,1 = 3,7
3) 3,7 : (-0,37) = -10