(1 3/7-2 3/4)*3 1/3 Решите пожалуйста. Created by fatullayevak. matematika-ru

3 Решите пожалуйста...

Bronzor1

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1 3/7=10/7
2 3/4= 11/4
3 1/3= 10/3
10/7-11/4=40-77/28=-37/28
-37/28*10/3=-370/84=-4 17/42

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Nastya171167 1) 1 3/7 - 2 3/4 = 10/7 - 11/4 =(10 × 4 - 11 × 7)/28 = 40/28 - 77/28 = - 37/28 = - 1 9/28
2) - 1 9/28 × 3 1/3 = - 37/28 × 10/3 = - 185/42 = - 4 17/42
ответ: - 4 17/42

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