Предмет: Алгебра, автор: Аноним

Решите систему уравнений

4x+3y=1,
3x-2y=12
Сам пробовал вроде всё правильно делал, но
не сходится может опечатка учителя, а может я дурачёк:)

Ответы

Автор ответа: Princess1035
1

4x + 3y = 1 \\ 3x - 2y = 12 \\ \\   4x + 3y = 1 \\ x = 4 +  \frac{2}{3} y \\ 4(4 +  \frac{2}{3} y) + 3y = 1 \\ y =   - \frac{45}{17}  \\ x = 4 +  \frac{2}{3}  \times ( -  \frac{45}{17} ) \\ x =  \frac{38}{17}  \\  \\ proverka \\ 4 \times   \frac{38}{17}  + 3 \times (  -  \frac{45}{17} ) = 1 \\ 3 \times  \frac{38}{17}  - 2 \times ( -  \frac{45}{17} )12 \\ 1 = 1 \\ 12 = 12

Аноним: Пасиба!
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