数学问题
2{2X-3}/0.01-6.5=0.02-2X/0.02-7.5 最好一步一步来,有过程,详细点 谢谢
2{2X-3}/0.01-6.5=0.02-2X/0.02-7.5 左边括号内展开 (4x-6)/0.01-6.5=0.02-x/0.01-7.5 4x/0.01-6/0.01-6.5=0.02-x/0.01-7.5 两边同乘以0.01 4x-6-0.065=0.0002-x-0.075 5x=6+0.065+0.0002-0.075 x=1.19804
2{2X-3}/0.01-6.5=0.02-2X/0.02-7.5 解:200(2X-3)-6.5=0.02-100X-7.5 400X-600-6.5=0.02-100X-7.5 400X-600-6.5+100X+600+6.5=0.02-100X-7.5+100X+600+6.5 500X=599.02 X=1.19804
答:是0.0...3(2013+2014-2个0)详情>>
答:详情>>