-0.7y+0.2= -0.3y+0.1
问题描述:
-0.7y+0.2= -0.3y+0.1
答
-0.7y+0.2= -0.3y+0.1
-0.7y+0.3y=0.1-0.2
-0.4y=-0.1
y=1/4