Question

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Answer 1

Объяснение:

№33

1) 8 7/12 - 2 17/36 = 8 21/36 - 2 17/36 = 6 4/36 = 6 1/9

2) 6 1/9 * 2,7 = 6 1/9 * 2 7/10 = 55/9 * 27/10 = 11/1 * 3/2 = 33/2 = 16 1/2

3) 4 1/3 : 0,65 = 13/3 : 65/100 = 13/3 * 100/65 = 1/3 * 100/5 = 100/15 = 20/3 = 6 2/3

4) 16 1/2 - 6 2/3 = 16 3/6 - 6 4/6 = 15 9/6 - 6 4/6 = 9 5/6

№34

Вынесем за скобки общий множитель

(74,7 * 2/21 + (-105,3) * 2 3/7 - (-105,3) * 2/21 - 2 3/7 * 74,7) : 10 =

(74,7 * 2/21 + (-105,3)*(2 3/7 - 2/21) - 2 3/7 * 74,7) : 10 =

(74,7 * 2/21 - 105,3*(2 9/21 - 2/21) - 2 3/7 * 74,7) : 10 =

(74,7 * 2/21 - 105,3 * 2 7/21 - 2 3/7 * 74,7) : 10 =

(74,7*(2/21 - 2 3/7) - 105,3 * 2 1/3) : 10 =

(74,7*(2/21 - 2 9/21) - 105,3 * 2 1/3) : 10 =

(74,7 * (-2 7/21) - 105,3 * 2 1/3) : 10 =

(74,7 * (-2 1/3) - 105,3 * 2 1/3) : 10 =

(-2 1/3 * (74,7 + 105,3)) : 10 =

(-7/3 * 180) : 10 = (-7/1 * 60) : 10 =

-420/1 : 10 = -420 : 10 = -42