Помогите решить премер с дробями: 4-(41/84-5/21) + 7 11/30P.S.:4,7 это целое число.
4-(41/84-5/21) + 7 11/30 = 4-(41/84-20/84)+ 221/30= 4-21/84 + 221/30= 4 - 1/4 + 221/30 = 240/60 - 15/60 + 442/60=667/60= 11 7/60
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4-(41/84-5/21) + 7 11/30 = 4-(41/84-20/84)+ 221/30= 4-21/84 + 221/30= 4 - 1/4 + 221/30 = 240/60 - 15/60 + 442/60=667/60= 11 7/60