|2m-4|+|9n-3|=0
2m-4=0
m=2
9n-3=0
n=1/3
n-m=1/3-2=-5/3
|2m-4|+|9n-3|=0,求n-m的值（数学题）
1个回答
相关问题
-
解一道数学题（求值题）2^m=6,4^n=2,求2^(2m-4n=3)的值是2^(2m-4n+3)
-
初一数学. 若|m-n+2|+3(2m+n+4)^2=0,求m^n的值
-
已知4m+n=9,2m-3n=1,求(m+2n)²-(3m-n)²的值
-
数学题：若3m+2n-5=0,求8^m×4^n的值. 用初一知识
-
已知m^2+9n^2+4m-6n+5=0,求m,n的值
-
已知2m-3n/3m+n=2,求4m-6n/9m+3n+18m+6n/4m-6n的值
-
(m^2-6mn+9n^2)/(3n-m)-(4m^2-9n^2)/(2m-3n) m=-2 n=2008.化简求值
-
初一数学化简求值2m-{n=[4m-3(m=2n)]}-5n
-
若4∧m=3,8∧n=5,求2∧4m+9n的值
-
已知m²＝9,|n|＝4,mn＜0,求﹙2m﹢n﹚﹢mn的值