17 1/3-2 * (3 5/8 + 4 5/8) + (8 1/2 - 4 3/8) * 4=

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Математика

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30 сентября, 03:57

17 1/3-2 * (3 5/8 + 4 5/8) + (8 1/2 - 4 3/8) * 4=

+1

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Венуша · Answer 1

17 1/3-2 * (3 5/8 + 4 5/8) + (8 1/2 - 4 3/8) * 4=

2 * (3 5/8 + 4 5/8) = 2 * 7 10/8=2 * 8 2/8=2 * 8 1/4=16 1/2

(8 1/2 - 4 3/8) * 4 = (8 4/8 - 4 3/8) * 2=4 1/8 * 2=8 1/4

17 1/3-16 1/2+8 1/4 = 9 + (1/3-1/2+1/4) = 9 1/12

1/3-1/2+1/4 = 4/12-6/12+3/12=1/12