ДАЮ 40 БАЛЛОВ!СРОЧНО!найти значение выражения!!!
1) (b+5/6)-3/4, при b= 11/12
2) (1/5+d)-9/20, при d =13/16
1) (b+5/6)-3/4, при b= 11/12
2) (1/5+d)-9/20, при d =13/16
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2: 21/12-3/4=21/12-9/12=12/12=1
2. 1/5+13/16=16/80+65/80=81/80
81/20-9/20=72/20=36/10=18/5=3,6
2) (1/5+13/16)-9/20=81/80-9/20=9/16