M/3-N/4=3M/2-N/3=13
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M/3-N/4=3
M/2-N/3=13
M/2-N/3=13
![M/3-N/4=3M/2-N/3=13](/uploads/image/z/17623003-67-3.jpg?t=M%2F3-N%2F4%3D3M%2F2-N%2F3%3D13)
m=162
n=204
4m-3n=36
3m-2n=78
12m-9n=36*3
12m-8n=78*4
-9n+8n=108-312
-n=-204
n=204
3m-408=78
m=162
n=204
4m-3n=36
3m-2n=78
12m-9n=36*3
12m-8n=78*4
-9n+8n=108-312
-n=-204
n=204
3m-408=78
m=162
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