0.1x-3/0.04=-0.4(3-0.5x)
问题描述:
0.1x-3/0.04=-0.4(3-0.5x)
答
0.1x-3/0.04=-0.4(3-0.5x)
(10x-300)/4=-1.2+0.2x
5x-150=-2.4+0.4x
4.6x=147.6
x≈32.09