y-6分之2-18y=【9分之y】+2
问题描述:
y-6分之2-18y=【9分之y】+2
答
y- 6分之(2-18y)=y/9 +2 即:y- (2-18y)/6=y/9 +2 两边乘以18,得:
18y-3(2-18y)=2y+36
18y-6+54y=2y+36
70y=42
y=3/5 --------------- (5分之3)