Question

当m为何值时,关于x的方程(m-2)x+3=11-m(3-x)的解不小于2

Answer 1

(m-2)x+3=11-m(3-x)
mx-2x+3=11-3m+mx
2x=3m-8
x=(3m-8)/2≥2
3m-8≥4
3m≥12
m≥4

Answer 2

方程式整理下：mx-2x+3=11-3m+mx
mx-2x-mx=8-3m
-2x=8-3m
x= -4+3/2 m
根据题意 方程式的解不小于2即：
-4+3/2 m>=2
得m>=4

Answer 3

先化简 mx-2x+3=11-3m+mx
-2x-8+3m=0
x=(3m-8)/2
x≥2 即 （3m-8)/2≥2 解得 m≥4

Answer 4

解：mx-2x+3=11-3m+mx
-2x-8+3m=0
x=(3m-8)/2
∵x≥2
∴（3m-8)/2≥2
-4+3/2 m≥2
∴m≥4

Answer 5

m-2)x+3=11-m(3-x)
mx-2x+3=11-3m+mx
2x=3m-8
x=(3m-8)/2≥2
3m-8≥4
3m≥12
m≥4

Answer 6

m>=4