将含有x的项合并(要进行通分),在利用除一个数等于乘这个数的倒数计算出x
解:2/3x+1/2x=424/6x+3/6x=427/6x=42x=42÷7/6x=36
2/3x+1/2x=42先通分 4/6x+3/6x=427/6x=42x=42*6/7x=36
求未知数解方程
2/3x+1/2x=424/6x+3/6x=427/6x=42x=42÷7/6x=36希望采纳,谢谢