7x-5/4=3/8;2x-1/6=5x+1/8;x-1/2+1=x-1;3/10(200+x)-2/10(300-x)=300x9/25;2y-1/3=y+2/4-1;3/4[4/3(1/2...7x-5/4=3/8;2x-1/6=5x+1/8;x-1/2+1=x-1;3/10(200+x)-2/10(300-x)=300x9/25;2y-1/3=y+2/4-1;3/4[4/3(1/2x-1/4)-8]=3/2x+1
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![7x-5/4=3/8;2x-1/6=5x+1/8;x-1/2+1=x-1;3/10(200+x)-2/10(300-x)=300x9/25;2y-1/3=y+2/4-1;3/4[4/3(1/2...7x-5/4=3/8;2x-1/6=5x+1/8;x-1/2+1=x-1;3/10(200+x)-2/10(300-x)=300x9/25;2y-1/3=y+2/4-1;3/4[4/3(1/2x-1/4)-8]=3/2x+1](/uploads/image/z/367072-16-2.jpg?t=7x-5%2F4%3D3%2F8%3B2x-1%2F6%3D5x%2B1%2F8%3Bx-1%2F2%2B1%3Dx-1%3B3%2F10%28200%2Bx%29-2%2F10%28300-x%29%3D300x9%2F25%3B2y-1%2F3%3Dy%2B2%2F4-1%3B3%2F4%5B4%2F3%281%2F2...7x-5%2F4%3D3%2F8%3B2x-1%2F6%3D5x%2B1%2F8%3Bx-1%2F2%2B1%3Dx-1%3B3%2F10%28200%2Bx%29-2%2F10%28300-x%29%3D300x9%2F25%3B2y-1%2F3%3Dy%2B2%2F4-1%3B3%2F4%5B4%2F3%281%2F2x-1%2F4%29-8%5D%3D3%2F2x%2B1)
7x-5/4=3/8;2x-1/6=5x+1/8;x-1/2+1=x-1;3/10(200+x)-2/10(300-x)=300x9/25;2y-1/3=y+2/4-1;3/4[4/3(1/2...7x-5/4=3/8;2x-1/6=5x+1/8;x-1/2+1=x-1;3/10(200+x)-2/10(300-x)=300x9/25;2y-1/3=y+2/4-1;3/4[4/3(1/2x-1/4)-8]=3/2x+1
7x-5/4=3/8;2x-1/6=5x+1/8;x-1/2+1=x-1;3/10(200+x)-2/10(300-x)=300x9/25;2y-1/3=y+2/4-1;3/4[4/3(1/2...
7x-5/4=3/8;2x-1/6=5x+1/8;x-1/2+1=x-1;3/10(200+x)-2/10(300-x)=300x9/25;2y-1/3=y+2/4-1;3/4[4/3(1/2x-1/4)-8]=3/2x+1
7x-5/4=3/8;2x-1/6=5x+1/8;x-1/2+1=x-1;3/10(200+x)-2/10(300-x)=300x9/25;2y-1/3=y+2/4-1;3/4[4/3(1/2...7x-5/4=3/8;2x-1/6=5x+1/8;x-1/2+1=x-1;3/10(200+x)-2/10(300-x)=300x9/25;2y-1/3=y+2/4-1;3/4[4/3(1/2x-1/4)-8]=3/2x+1
14x-15=3 x=9/7; 8x-4=15x+3 x=-1;x-1/2=1 x=3;600+3x-600+2x=300x18/5 x=12*18=216;
2y-1/3=y+2/4-1 8y-4=3y+6-12 5y=-2 y=-2/5
(1/2x-1/4)-6=3/2x+1 1/2x-3/2x=7+1/4 -2=14x+x/2 -4=29x x=-4/29
你这个是什么区别咯
因为14x-15=3 所以 x=9/7
解8x-4=15x+3 x=-1
即x-1/2=1 x=3600+3x-600+2x=300x18/5 x=12*18=216;2y-1/3=y+2/4-1
8y-4=3y+6-12 5y=-2 y=-2/5
(1/2x-1/4)-6=3/2x+1 1/2x-3/2x=7+1/4 -2=14x+x/2
-4=29x x=-4/29