Вычислите пожалуйста:
1/6 + 1/12 + 1/20 + 1/30 + 1/42 +1/56
У меня получился ответ 3/8, скажите, правильно или нет?

21 / 56 = 3 / 8

в е р  н о.............

Выражение: 1/6+1/12+1/20+1/30+1/42+1/56Ответ: 0.375Решаем по действиям:1. 1/6=(1//6)2. 1/12=(1//12)3. (1//6)+(1//12)=0.254. 1/20=0.05 1.00|2_0_ _ 1_0_0_|0.05 05. 0.25+0.05=0.3 +0.25 _0_._0_5_ 0.306. 1/30=(1//30)7. 0.3+(1//30)=(1//3)8. 1/42=(1//42)9. (1//3)+(1//42)=(5//14)10. 1/56=(1//56)11. (5//14)+(1//56)=0.375Решаем по шагам:1. (1//6)+1/12+1/20+1/30+1/42+1/56 1.1. 1/6=(1//6)2. (1//6)+(1//12)+1/20+1/30+1/42+1/56 2.1. 1/12=(1//12)3. 0.25+1/20+1/30+1/42+1/56 3.1. (1//6)+(1//12)=0.254. 0.25+0.05+1/30+1/42+1/56 4.1. 1/20=0.05 1.00|2_0_ _ 1_0_0_|0.05 05. 0.3+1/30+1/42+1/56 5.1. 0.25+0.05=0.3 +0.25 _0_._0_5_ 0.306. 0.3+(1//30)+1/42+1/56 6.1. 1/30=(1//30)7. (1//3)+1/42+1/56 7.1. 0.3+(1//30)=(1//3)8. (1//3)+(1//42)+1/56 8.1. 1/42=(1//42)9. (5//14)+1/56 9.1. (1//3)+(1//42)=(5//14)10. (5//14)+(1//56) 10.1. 1/56=(1//56)11. 0.375 11.1. (5//14)+(1//56)=0.375