1.(11 2/3 - 8 3/4) + (3 1/3 + 2 5/6) - 4 7/12 =
2.(3 1/4 - 2 2/3)(1 5/6 - 1 7/12) + 3 5/24 =
3.3 2/5 - (1 1/3 + 1 1/4) =
4.3,4+2 3/4=
5. Х-2 1/3=12 1/4
Помните плиз ❤️
2.(3 1/4 - 2 2/3)(1 5/6 - 1 7/12) + 3 5/24 =
3.3 2/5 - (1 1/3 + 1 1/4) =
4.3,4+2 3/4=
5. Х-2 1/3=12 1/4
Помните плиз ❤️
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Ответ:
1.(11 2/3 - 8 3/4) + (3 1/3 + 2 5/6) - 4 7/12 = (35/3-35/4) + (10/3+17/6) - 55/12 = 35/12 + 37/6 - 55/12 = 27/6 = 4,5
2.(3 1/4 - 2 2/3)(1 5/6 - 1 7/12) + 3 5/24 = (13/4 - 8/3)(11/6 - 19/12) + 77/24 = 7/12 * 1/4 + 77/12 = 7/48 + 77/12 = 315/48 = 6 9/16
3.3 2/5 - (1 1/3 + 1 1/4) = 17/5 - (4/3+ 5/4) = 17/5 - 31/12 = 49/60
4.3,4+2 3/4= 3,4 + 2,75 = 6,15
5. Х-2 1/3=12 1/4
Х = 12 1/4 + 2 1/3
Х = 14 7/12