Предмет: Алгебра, автор: Ragga

Решите систему уравнений методом подбора!

2x + 3y = 16
3x - 2y = 11

Ответы

Автор ответа: natasharazumov
0
2x + 3y = 16 | *3
3x - 2y = 11 | *2
6x + 9y = 48
6x - 4y = 22 (вычитаешь 6x - 4y = 22 из 6x + 9y = 48)
13y = 26 | : 13
y = 2
2x + 3*2 = 16
2x + 6 = 16
2x = 16 - 6
2x = 10 | :2
x = 5
 Ответ: x = 5
           y = 2
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