已知x/3-y/4=3x+2y-75=3求x,y

学习 时间:2026-04-03 12:05:49 阅读:4721
已知x/3-y/4=3x+2y-75=3求x,y

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雪白的西装

缥缈的蜡烛

2026-04-03 12:05:49

3x+2y-75=3 ,3x=78-2y ,x=26-2y/3;x/3-y/4=3 ,4x-3y=36 ,4x=36+3y ,x=9+3y/4;x=26-2y/3=9+3y/42y/3+3y/4=17 17y/12=17 y=12x=26-2y/3=18

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  • 不安的煎饼
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    2026-04-03 12:05:49

    3x+2y-75=3 ,3x=78-2y ,x=26-2y/3;x/3-y/4=3 ,4x-3y=36 ,4x=36+3y ,x=9+3y/4;x=26-2y/3=9+3y/42y/3+3y/4=17 17y/12=17 y=12x=26-2y/3=18

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