x+1/0.2−x+3/0.01=50.
问题描述:
−x+1 0.2
=50. x+3 0.01
答
方程变形得:
-10x+10 2
=50,100x+300 1
去分母得:10x+10-200x-600=100,
移项合并得:-190x=690,
解得:x=-
.69 19