7.11/15 - (x-3.4/15) = 2.8/15

Question

Амина Иванова

Математика

14 мая, 05:22

7.11/15 - (x-3.4/15) = 2.8/15

+1

Ответы (1)

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Константин Павлов · Answer 1

7 11/15 - (x - 3 4/15) = 2 8/15;

7 11/15 - 2 8/15 = x - 3 4/15;

7 - 2 + 11/15 - 8/15 = x - 3 4/15;

5 + (11 - 8) / 15 = x - 3 4/15;

5 + 3/15 = x - 3 4/15;

5 + 3 / (3 * 5) = x - 3 4/15;

5 + 1/5 = x - 3 4/15;

5 1/5 = x - 3 4/15;

5 1/5 + 3 4/15 = x;

5 + 3 + 3/15 + 4/15 = x;

8 + (3 + 4) / 15 = x;

8 + 7/15 = x;

x = 8 7/15.

Или:

- (х - 3 4/15) = 2 8/15 - 7 11/15;

- (х - 3 4/15) = 2 - 7 + 8/15 - 11/15;

- (х - 3 4/15) = - 5 + (8 - 11) / 15;

- (х - 3 4/15) = - 5 - 3/15;

-х + 3 4/15 = - 5 3/15;

-х = - 5 3/15 - 3 4/15;

-х = - 8 7/15;

х = 8 7/15.