9 1/5 - (1/2:x-4 1/2) : 11 1/4 = 8 14/15

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2 июня, 10:25

9 1/5 - (1/2:x-4 1/2) : 11 1/4 = 8 14/15

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Паша · Answer 1

9 1/5 - (1/2:x-4 1/2) : 11 1/4 = 8 14/15

(1/2:x-4 1/2) : 11 1/4 = 9 3/15 - 8 14/15

(1/2:x-4 1/2) : 11 1/4 = 4/15

1/2:x-4 1/2 = 4/15 * 11 1/4

1/2:x-4 1/2 = 4/15 * 45/4

1/2:x-4 1/2 = 3

1/2:x = 3 + 4 1/2

1/2:x = 7 1/2

x = 1/2 : 7 1/2

x = 1/2 * 2/15

x = 1/15