解方程
0.2×-0.4+0.5=3.7解:0.2×+0.1=3.70.2×=3.7-0.10.2×=3.6x=18
请采纳
0.2×-0.4+0.5=3.70.2×+0.1=3.70.2×=3.6×=18
0.2×-0.4+0.5=3.7的解方程0.2x=3.6,x=18.