4/11(x-9)+1/2x=x-9怎么做? 5
1个回答
展开全部
解:解方程, 此方程的解为x = 42
4/11(x - 9) + 1/2x = x - 9
(4/11)x - 4/11 × 9 + (1/2)x = x - 9
(4/11)x - 36/11 + (1/2)x = x - 9
(8/22)x - 36/11 + (11/22)x = x - 9
(19/22)x - 36/11 = x - 9
x - (19/22)x = -36/11 + 9
(22/22)x - (19/22)x = -36/11 + 99/11
(3/22)x = 63/11
x = 63/11 ÷ 3/22
x = 63/11 × 22/3
∴x = 42
答:此方程的解为x = 42
4/11(x - 9) + 1/2x = x - 9
(4/11)x - 4/11 × 9 + (1/2)x = x - 9
(4/11)x - 36/11 + (1/2)x = x - 9
(8/22)x - 36/11 + (11/22)x = x - 9
(19/22)x - 36/11 = x - 9
x - (19/22)x = -36/11 + 9
(22/22)x - (19/22)x = -36/11 + 99/11
(3/22)x = 63/11
x = 63/11 ÷ 3/22
x = 63/11 × 22/3
∴x = 42
答:此方程的解为x = 42
厦门鲎试剂生物科技股份有限公司
2023-08-01 广告
2023-08-01 广告
计算过程如下:首先,计算4个数值的和:∑Xs = 0.3 + 0.2 + 0.4 + 0.1 = 1然后,计算 lg-1(∑Xs/4):lg-1(∑Xs/4) = lg-1(1/4) = -1其中,lg表示以10为底的对数,即 log10。...
点击进入详情页
本回答由厦门鲎试剂生物科技股份有限公司提供
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