Question

Помогите пожалуйста решить 1. 2 5/14-2 1/4:(-1/7+5 1/2)2. (2/5*1 1/4-2 1/4):(-1/2)3. -13/20*(8/15-3/5*(1/3))-44. (15/16-2 1/4+3/8)*(-1/32)5. -2 1/6+2 1/12*(1/4-1 1/3*(-4/13))​

Answer 1

это 1

а дальше не знаю

.....

Answer 2

1. Решим по порядку: 1/4:(-1/7+5+1/2) = 1/4:(11/14-1/7) = 1/4:(11/14-2/14) = 1/4:(9/14) = 1/4 * (14/9) = 14/36 = 7/18 2 + 5/14 - 7/18 = 36/18 + 5/14 - 7/18 = 2 + 5/14 - 7/18 = 4/2 + 5/14 - 7/18 = 8/4 + 5/14 - 7/18 = 16/8 + 5/14 - 7/18 = 32/16 + 5/14 - 7/18 = 32/16 + 45/126 - 49/126 = 32/16 + (45-49)/126 = 32/16 - 4/126 = 32/16 - 2/63 = 2 - 1/63 = 127/63 - 1/63 = 126/63 = 2

2. Решим по порядку: (2/5*1+1/4-2+1/4):(-1/2) = (2/5 + 1/4 - 2 + 1/4) * (-2/1) = (8/20 + 5/20 - 40/20 + 5/20) * (-2/1) = (-22/20) * (-2/1) = 44/20 = 11/5

3. Решим по порядку: -13/20*(8/15-3/5*(1/3)) = -13/20*(8/15-3/15) = -13/20*(5/15) = -13/20 * (1/3) = -13/60

4. Решим по порядку: (15/16-2+1/4+3/8)*(-1/32) = (15/16 + 1/4 + 3/8 - 2) * (-1/32) = (15/16 + 2/8 + 3/8 - 2) * (-1/32) = (15/16 + 5/8 - 2) * (-1/32) = (15/16 + 10/16 - 2) * (-1/32) = 25/16 - 2 * (-1/32) = 25/16 - (-1/16) = 25/16 + 1/16 = 26/16 = 13/8

5. Решим по порядку: -2+1/6+2+1/12*(1/4-1+1/3*(-4/13)) = -2 + 1/6 + 2 + 1/12 * (1/4 - 1 + 1/3 * (-4/13)) = -2 + 1/6 + 2 + 1/12 * (1/4 - 1 + (-4/39)) = -2 + 1/6 + 2 + 1/12 * (1/4 - 1 - 4/39) = -2 + 1/6 + 2 + 1/12 * (-9/4 - 1 - 4/39) = -2 + 1/6 + 2 + 1/12 * (-9/4 - 39/39 - 4/39) = -2 + 1/6 + 2 + 1/12 * (-9/4 - 43/39) = -2 + 1/6 + 2 + 1/12 * (-351/156 - 172/156) = -2 + 1/6 + 2 + 1/12 * (-523/156) = -2 + 1/6 + 2 - 523/1872 = -3744/1872 + 312/1872 + 3744/1872 - 523/1872 = -3744/1872 + 312/1872 + 3744/1872 - 523/1872 = -3432/1872 + 312/1872 - 523/1872 = -3443/1872