21-3x=14x+3.5
问题描述:
21-3x=14x+3.5
求x
答
21-3x=14x+3.5
-3x-14x=3.5-21
-17x=-17.5
x=35/347(3—3)=14x+3.53-3 ?对7(3—3)=14x+3.514x+3.5=014x=-3.5x=-3.5/14x=-1/4