Question

Решите систему уравнений
4x-2y=-9
3x-3y=-6

Answer 1

4x -2y = -9
3x - 3y = -6 | /3
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4x - 2y = -9
x - y = -2
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4 * (-2 + y) - 2y = -9
x = -2 + y
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4 * (-2 + y) - 2y = -9
-8 + 4y - 2y = -9
2y = -9 + 8
y = -1/2
y = -0.5
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x = -2 + (-0.5) = - 2 - 0.5 = -2.5

Ответ: ( - 2,5 ; -0,5)