1)а)2.07*0.17=0.3519
б)5.068*3.5=17.738
в)10.65*1.21=12.78
г)0.032*0.071=1. 0.002272
2)6.4*0.3125-13.6*0.07+1.3=Выражение: 6.4*0.3125-13.6*0.07+1.3
Ответ: 2.348
Решаем по действиям:1. 0.3125=3125//100002. 3125//10000=5//163. 6.4*(5//16)=24. 13.6*0.07=0.952 X13.6 _ _0_._0_7_ _ 952 000 0_0_0_ _ _ _ 0.952 5. 2-0.952=1.048 -2.000 _0_._9_5_2_ 1.0486. 1.048+1.3=2.348 +1.048 _1_._3_0_0_ 2.348
Решаем по шагам:1. 6.4*(3125//10000)-13.6*0.07+1.3 1.1. 0.3125=3125//100002. 6.4*(5//16)-13.6*0.07+1.3 2.1. 3125//10000=5//163. 2-13.6*0.07+1.3 3.1. 6.4*(5//16)=24. 2-0.952+1.3 4.1. 13.6*0.07=0.952 X13.6 _ _0_._0_7_ _ 952 000 0_0_0_ _ _ _ 0.952 5. 1.048+1.3 5.1. 2-0.952=1.048 -2.000 _0_._9_5_2_ 1.0486. 2.348 6.1. 1.048+1.3=2.348 +1.048 _1_._3_0_0_ Ответ 2.348
3)(х+0.14)+х=5.142х+0.14=5.142х=5.14-0.142х=5х=2.5пончик съел: 2.5+0.14=2.64незнайка съел: 5.14-2.64= 2.5
Удачки в учебе)