Решить систему уравнений графически: 2x-y=3 x+2y=4. Created by Pashastrok. algebra-ru

Ответ:Объяснение:

Решить систему уравнений графически: 2x-y=3 x+2y=4...

Pashastrok @Pashastrok

July 2022 1 19 Report

Решить систему уравнений графически:
2x-y=3
x+2y=4

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Ответ:

$\left \{ {{2x-y=3} \atop {x+2y=4}} \right. \\\left \{ {{y=-3+3x} \atop {x+2y=4}} \right. \\x+2(-3+2x)=4\\x-2\\y=-3+2*2\\y=1\\(x,y)=(2,1)\\\left \{ {{2*2-1=3} \atop {2+2*1=4}} \right. \\\left \{ {{3=3} \atop {4=4}} \right. \\(x,y)=(2,1)$

Объяснение:

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