红外无线感应器:解下列二元一次方程组.(过程一定要详细)
来源:百度文库 编辑:神马品牌网 时间:2024/05/03 05:07:46
1.m/2+n/3=6 2. (4+1.5)x+4y=42
4m-5n=2 3+5x+42=13y
3. 2.5x+2.5y=400 4. x+y=680
12.5x-12.5y=400 12‰x+13‰=84.2
5.2(x+2y)=560 6. x+y=500
4(x+y)=800 [(1+50‰)x+(1+40‰)y]=500+157
4m-5n=2 3+5x+42=13y
3. 2.5x+2.5y=400 4. x+y=680
12.5x-12.5y=400 12‰x+13‰=84.2
5.2(x+2y)=560 6. x+y=500
4(x+y)=800 [(1+50‰)x+(1+40‰)y]=500+157
认真钻研一下吧,太简单了