问题描述:
解二元一次方程组x+y=572 0.92x+0.57y=0.72最佳答案:
92x+57y = 72;
57x+57y = 572*57;
得出:35x = 72 - 572*57;x= (72-572*57)/ 35 ;
r然后代入x+y = 572;
得:x= -32532/35
y= 52552/35
解二元一次方程组x+y=5720.92x+0.57y=0.72
问题描述:
解二元一次方程组x+y=572 0.92x+0.57y=0.7292x+57y = 72;
57x+57y = 572*57;
得出:35x = 72 - 572*57;x= (72-572*57)/ 35 ;
r然后代入x+y = 572;
得:x= -32532/35
y= 52552/35