四分之七x减4=1.6怎么解?
2个回答
展开全部
解:解方程, 此方程的解为x = 16/5,【即x = 3.2】
四分之七x减4=1.6
(7/4)x - 4 = (1×10+6)/10
(7/4)x - 4 = 16/10
(7/4)x = 16/10 + 4
(7/4)x = 16/10 + 40/10
(7/4)x = 56/10
(7/4)x = 28/5
x = 28/5 ÷ 7/4
x = 28/5 × 4/7
x = 16/5
∴x = 3.2
答:此方程的解为x = 16/5,【即x = 3.2】
四分之七x减4=1.6
(7/4)x - 4 = (1×10+6)/10
(7/4)x - 4 = 16/10
(7/4)x = 16/10 + 4
(7/4)x = 16/10 + 40/10
(7/4)x = 56/10
(7/4)x = 28/5
x = 28/5 ÷ 7/4
x = 28/5 × 4/7
x = 16/5
∴x = 3.2
答:此方程的解为x = 16/5,【即x = 3.2】
已赞过
已踩过<
评论
收起
你对这个回答的评价是?
推荐律师服务:
若未解决您的问题,请您详细描述您的问题,通过百度律临进行免费专业咨询