解方程一3x-1⼀2+2=x+1二3(x+2)+4=(x+2)三x-1⼀3-2x+1⼀4=x-1⼀12答案一定要正确啊

2024-12-22 14:00:55
推荐回答(3个)
回答1:

(1) (3x-1)/2+2 =x+1
解:去分母: 3x-1+4 = 2x+2
移项: 3x - 2x = 2-3
合并同类项: X = -1

(2)3(x+2)+4 = (x+2)
解:去括号 3x+6+4 = x+2
移项: 3x - x = 2-10
合并同类项: 2x = -8
两边都除以2 : x = -4

(3)(x-1)/3-(2x+1)/4 =(x-1)/12
解:去分母: 4(x-1)-3(2x+1) = x-1
去括号 : 4x-4-6x-3 = x-1
合并同类项: -2x- 7 = x-1
移项: -2x - x = 7-1
合并同类项: -3x = 6
两边都除以-32: x = -2

回答2:

一、方程两边乘上2得 :3x+4=2x+1, x=3
二、化简得:3x+6+4=x+2 2x=-8 x=-4
三方程两边同时场上12得:4x-4-6x-3=x+1 3x=-6 x=-2

回答3:

3x-1/2+2=x+1
解:3x-1+4=2x+2
3x-2x=2-3
x=-1
3(x+2)+4=(x+2)
解:3x+6+4=x+2
3x-x=2-10
2x=-8
x=-4
(x-1)/3-(2x+1)/4=(x-1)/12
解:4(x-1)-3(2x+1)=x-1
4x-4-6x-3=x-1
-2x-7=x-1
-2x-x=7-1
-3x=6
x=-2