Решите срочнооо.......

Question

Решите срочнооо.......

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Answer 1

40,
1) 3 2/15 * (2 3/4 - 1,75) = 3 2/15  * 1 = 3 2/15
2) 8 3/4 *(2 1/5 + 7 4/5) = 8 3/4 * 10 = 87,5
3)  5,3 * (7 2/3 - 2/3) = 5,3 * 7 = 37,1
4) 7 1/4 * (1,2 + 8,8) = 7 1/4 * 10 = 72,5