РЕШИТЕ ПЛИЗ ПОДРОБНО

Question

РЕШИТЕ ПЛИЗ ПОДРОБНО

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Answer 1

7/15+3/10=14/30+9/30 = 23/30

2 целых 14/23= 60/23

23/30 * 60/23 = 2

7/19-30/57 = 21/57-30/57= -9/57

1 целая 6/57 = 63/57

63/57 : (-9/57)= 63/57 * (-57/9)= -7

2 + (-7) = -5