(2x+1)/5-(x+1)/3=0 两边同时乘以15得
3(2x+1)-5(x+1)=0
6x+3-5x-5=0
x-2=0
x=2没看懂哦(2x+1)/5-(x+1)/3=0去分母3(2x+1)-5(x+1)=0去括号6x+3-5x-5=0合并同类项x-2=0 移项x=2