X=14*0.16/28X=0.45*0.8/0.5X=6*0.5/6结果,动一下笔吧
两边同时乘0.8x去掉分母,得 0.5x=0.45*0.8解方程可得,x=0.72
可以写做0.5:0.8=0.45:x0.8×0.45=0.5x, 然后自己算吧!
14:28=0.16:x
解:1:2=0.16:x
x=0.32
0.5/0.8=0.45/x
解:5/8=0.45/x
5x=3.6
x=0.72
x:6=0.5:1/6
解:x:6=3:1
x=18