Выражение: (7/12-8/15)*2+4/5*(7/10-9/16)
Ответ: 0.21
Решаем по действиям:1. 7/12=(7//12)2. 8/15=(8//15)3. (7//12)-(8//15)=0.054. 0.05*2=0.1 X0.05 _ _ _2_ 0.1 5. 4/5=0.8 4.0|5_ _ 4_0_|0.8 06. 7/10=0.7 7.00|1_0_ _ 7_0_ |0.7 07. 9/16=(9//16)8. 0.7-(9//16)=(11//80)9. 0.8*(11//80)=0.1110. 0.1+0.11=0.21 +0.10 _0_._1_1_ 0.21
Решаем по шагам:1. ((7//12)-8/15)*2+4/5*(7/10-9/16) 1.1. 7/12=(7//12)2. ((7//12)-(8//15))*2+4/5*(7/10-9/16) 2.1. 8/15=(8//15)3. 0.05*2+4/5*(7/10-9/16) 3.1. (7//12)-(8//15)=0.054. 0.1+4/5*(7/10-9/16) 4.1. 0.05*2=0.1 X0.05 _ _ _2_ 0.1 5. 0.1+0.8*(7/10-9/16) 5.1. 4/5=0.8 4.0|5_ _ 4_0_|0.8 06. 0.1+0.8*(0.7-9/16) 6.1. 7/10=0.7 7.00|1_0_ _ 7_0_ |0.7 07. 0.1+0.8*(0.7-(9//16)) 7.1. 9/16=(9//16)8. 0.1+0.8*(11//80) 8.1. 0.7-(9//16)=(11//80)9. 0.1+0.11 9.1. 0.8*(11//80)=0.1110. 0.21 10.1. 0.1+0.11=0.21 +0.10 _0_._1_1_ 0.21