1) 3/8 * (-4) + 5 = 2) 5/9 : (-1/3) - 7 = 3) 2/5 * (-3) - 4/5 = 4) 5/12:1/4 - (-1/3) = 5) (1/2) * (-4) - 5 = 6) 4/9 : (-2/3) + 1=

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Freda

Математика

3 декабря, 12:45

1) 3/8 * (-4) + 5 = 2) 5/9 : (-1/3) - 7 = 3) 2/5 * (-3) - 4/5 = 4) 5/12:1/4 - (-1/3) = 5) (1/2) * (-4) - 5 = 6) 4/9 : (-2/3) + 1=

+5

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Кирилл Елисеев · Answer 1

1) 3/8 * (-4) + 5 = - 12/8 + 5 = - 3/2 + 5 = - 3/2 + 10/2 = 7/2 = 3 1/2.

2) 5/9 : (-1/3) - 7 = 5/9 * (-3/1) - 7 = - 15/9 - 7 = - 5/3 - 7 = - 5/3 - 21/3 = - 26/3 = - 8 2/3.

3) 2/5 * (-3) - 4/5 = - 6/5 - 4/5 = - 10/5 = - 2.

4) 5/12 : 1/4 - (-1/3) = 5/12 * 4/1 - (-1/3) = 20/12 - (-1/3) = 5/3 - (-1/3) = 6/3 = 2.

5) (1/2) * (-4) - 5 = - 4/2 - 5 = - 2 - 5 = - 7.

6) 4/9 : (-2/3) + 1 = 4/9 * (-3/2) + 1 = - 12/18 + 1 = - 2/3 + 1 = - 2/3 + 3/3 = 1/3.