-4n+3m=﹣11 3n-4m=-53
问题描述:
-4n+3m=﹣11 3n-4m=-53
答
﹛-4n+3m=﹣11①,3n-4m=-53②﹜
①×3﹢②×4得:
-7M=-245
M=35
把M=35代入①得:-4N+3×35=-11
N=29
∴此方程组的解为﹛N=29,M=35﹜