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Sagot :
4a + 9b + 0c = 8 ⇒ 4a + 9b + 0c = 8
8a + 0b + 6c = -1 ⇒ 8a + 0b + 6c = -1
0a + 6b + 6c = -1 12a + 9b + 6c = 7
12a + 9b + 6c = 7 ⇒ 24a + 18b + 12c = 14
4a + 9b + 0c = 8 8a + 6b + 12c = 0 ⇒ 24a + 18b + 36c = 0
8a + 0b + 6c = -1 ⇒ 8a + 0b + 6c = -1 -24c = 14
0a + 6b + 6c = -1 ⇒ 0a + 6b + 6c = -1 -24 -24
8a + 6b + 12c = 0 c = ⁷/₁₂
6b + 6(⁷/₁₂) = -1
6b + 3¹/₂ = -1
- 3¹/₂ - 3¹/₂
6b = -4¹/₂
6 6
b = ³/₄
4a + 9(³/₄) = 8
4a + 6³/₄ = 8
- 6³/₄ - 6³/₄
4a = 1¹/₄
4 4
a = ⁵/₁₆
(a, b, c) = (⁵/₁₆, ³/₄, ⁷/₁₂)
8a + 0b + 6c = -1 ⇒ 8a + 0b + 6c = -1
0a + 6b + 6c = -1 12a + 9b + 6c = 7
12a + 9b + 6c = 7 ⇒ 24a + 18b + 12c = 14
4a + 9b + 0c = 8 8a + 6b + 12c = 0 ⇒ 24a + 18b + 36c = 0
8a + 0b + 6c = -1 ⇒ 8a + 0b + 6c = -1 -24c = 14
0a + 6b + 6c = -1 ⇒ 0a + 6b + 6c = -1 -24 -24
8a + 6b + 12c = 0 c = ⁷/₁₂
6b + 6(⁷/₁₂) = -1
6b + 3¹/₂ = -1
- 3¹/₂ - 3¹/₂
6b = -4¹/₂
6 6
b = ³/₄
4a + 9(³/₄) = 8
4a + 6³/₄ = 8
- 6³/₄ - 6³/₄
4a = 1¹/₄
4 4
a = ⁵/₁₆
(a, b, c) = (⁵/₁₆, ³/₄, ⁷/₁₂)
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