alena-4e11

To solve this expression, you can multiply the two numerators (57 and 16) together and then multiply the two denominators (40 and 1) together. Then divide the result of the numerator by the result of the denominator. So, (57/40) * (16/1) = (57 * 16) / (40 * 1) = 912/40 = 22.8 Therefore, 57/40 * 16/1 = 22.8.

To solve this expression, we need to first simplify the mixed numbers: 2ц4/5 = 10/5 + 4/5 = 14/5 2ц3/8 = 16/8 + 3/8 = 19/8 Now we can substitute these values into the expression: (14/5 - 19/8) * 16 To simplify the expression further, we need to find a common denominator for 5 and 8, which is 40: (14/5 * 8/8 - 19/8 * 5/5) * 16 (112/40 - 95/40) * 16 17/40 * 16 Finally, we can multiply the fraction by the whole number: 17/40 * 16 = 6.8 Therefore, (2ц4/5-2ц3/8)*16 = 6.8.

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