Решить астана и караганда 3 сантиметра масштаб 1 : 7.500.000 на местности ? решение
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254
Ответы на вопрос:
А) 25/80+45/60 = 5/16 + 3/4 =
= 5/16 + 12/16 = 17/16 = 1 1/16
б) 36/300+14/40-350/1000 =
= 3/25 + 7/20 - 7/20 = 3/25
в) 42/120+20/32-28/160 =
= 7/20 + 5/8 - 7/40 =
= 14/40 + 25/40 - 7/40 =
= 7/40 + 25/40 = 32/40 = 4/5
г) 20/45 + 26/54=
= 4/9 + 13/27 =
= 12/27 + 13/27 = 25/27
д) 14/24-39/90+15/100 =
= 7/12 - 13/30 + 3/20 =
= 35/60 - 26/60 + 9/60 =
18/60 = 3/10
е) 45/72-33/144-20/64 =
= 5/8 - 11/48 - 5/16
= 30/48 - 11/48 - 15/48 =
= 30/48 - 26/48 = 4/48 = 1/12
= 5/16 + 12/16 = 17/16 = 1 1/16
б) 36/300+14/40-350/1000 =
= 3/25 + 7/20 - 7/20 = 3/25
в) 42/120+20/32-28/160 =
= 7/20 + 5/8 - 7/40 =
= 14/40 + 25/40 - 7/40 =
= 7/40 + 25/40 = 32/40 = 4/5
г) 20/45 + 26/54=
= 4/9 + 13/27 =
= 12/27 + 13/27 = 25/27
д) 14/24-39/90+15/100 =
= 7/12 - 13/30 + 3/20 =
= 35/60 - 26/60 + 9/60 =
18/60 = 3/10
е) 45/72-33/144-20/64 =
= 5/8 - 11/48 - 5/16
= 30/48 - 11/48 - 15/48 =
= 30/48 - 26/48 = 4/48 = 1/12
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