3/4x-2/5x=14 (6+3x)÷2=12
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3/4x-2/5x=14 (6+3x)÷2=12
![3/4x-2/5x=14 (6+3x)÷2=12](/uploads/image/z/18715260-12-0.jpg?t=3%2F4x-2%2F5x%3D14+%286%EF%BC%8B3x%29%C3%B72%3D12)
3/4x-2/5x=14
15x/20-8x/20=14;
7x/20=14;
x=40;
(6+3x)÷2=12
6+3x=24;
3x=18;
x=6;
如果本题有什么不明白可以追问,
15x/20-8x/20=14;
7x/20=14;
x=40;
(6+3x)÷2=12
6+3x=24;
3x=18;
x=6;
如果本题有什么不明白可以追问,
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