Question

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Answer 1

3/4*4.2+27.69:4.26 + 8/10=10 9/20

1) 3/4 * 4.2 = 3/4 * 4 2/10 = 3/4 * 42/10 = 63/20 = 3.15

2) 27.69: 4.26 = 6.5

3) 3.15 + 6.5 = 9.65

4) 9 65/100+8/10 = 9 65/100 + 80/100 = 9 145/100 = 10 45/100 = 10 9/20

Ответ: 10 9/20