Предмет: Другие предметы,
автор: Uliana19200303
Китайская задача. может кто знает как решить..
А+В=8
С-Д=6
= =
13 8
Приложения:
![](https://files.topotvet.com/i/199/199f517c2d80c6c18f0b48e570747ae1.png)
Ответы
Автор ответа:
16
a + b = 8 => a = 8 - b
b + d = 8 => d = 8 - b,
= d a + c = 13 => a = 13 - c c - d = 6 => d = c - 6
a = d c - 6 = 13 - c => 2c = 19 => c = 9.5
: A+b=8,c-d=6,a+c=13,b+d=8..
a + b = 8 => a = 8 - b b + d = 8 => d = 8 - b,
a = d a + c = 13 => a = 13 - c c - d = 6 => d = c - 6
a = d c - 6 = 13 - c => 2c = 19 => c = 9.5
a + b = 8, (1) c - d = 6, (2) a + c = 13, (3) b + d = 8. (4)
(1), (2), (3) (4)
2a + 2b + 2c = 8 + 6 + 13 + 8 = 35, or a + b + c = 17.5.
c = 17.5 - 8 = 9.5..
b = 17.5 - 13 = 4.5.
(1) a = 8-b = 8-4.5 = 3.5,
(4) d = 8-b = 8-4.5 = 3.5.
a = 3.5, b = 4.5, c = 9.5, d = 3.5.
= d a + c = 13 => a = 13 - c c - d = 6 => d = c - 6
a = d c - 6 = 13 - c => 2c = 19 => c = 9.5
: A+b=8,c-d=6,a+c=13,b+d=8..
a + b = 8 => a = 8 - b b + d = 8 => d = 8 - b,
a = d a + c = 13 => a = 13 - c c - d = 6 => d = c - 6
a = d c - 6 = 13 - c => 2c = 19 => c = 9.5
a + b = 8, (1) c - d = 6, (2) a + c = 13, (3) b + d = 8. (4)
(1), (2), (3) (4)
2a + 2b + 2c = 8 + 6 + 13 + 8 = 35, or a + b + c = 17.5.
c = 17.5 - 8 = 9.5..
b = 17.5 - 13 = 4.5.
(1) a = 8-b = 8-4.5 = 3.5,
(4) d = 8-b = 8-4.5 = 3.5.
a = 3.5, b = 4.5, c = 9.5, d = 3.5.
AnnaSirokova:
напишите как правильно
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