解方程组x+y/2+x-y/3=1,4(x+y)-2(x-y)=1 解方程组m+n/3-n-m/4=2,4m+n/3=29/3_数学解答

解方程组x+y/2+x-y/3=1,4(x+y)-2(x-y)=1 解方程组m+n/3-n-m/4=2,4m+n/3=29/3

人气：478 ℃　时间：2020-02-03 03:40:06

解答

x+y/2+x-y/3=1,4(x+y)-2(x-y)=1设x+y=a x-y=b∴a/2+b/3=13a+2b=64a-2b=1解得：a=1b=3/2∴x+y=1 x-y=3/2∴x=5/4 y=-1/4m+n/3-n-m/4=2,4m+n/3=29/3整理得：7m+n=2412m+n=29∴m=1 n=17...