2x-3=5x+7+9x 3-6(x+2⼀3)=2⼀3 3⼀4x-0.4=1⼀2x+0.3 (x+8)⼀3=-x

2x-3=5x+7+9x 3-6(x+2⼀3)=2⼀3 3⼀4x-0.4=1⼀2x+0.3 (x+8)⼀3=-x 都求x
2024-11-23 00:45:28
推荐回答(3个)
回答1:

2x-3=5x+7+9x
9x+5x-2x=-3-7
12x=-10
x=-5/6

3-6(x+2/3)=2/3
3-6x-4=2/3
6x=3-4-2/3=-5/3
x=-5/18

3/4x-0.4=1/2x+0.3
3/4x-1/2x=0.3+0.4
1/4x=0.7
x=2.8

(x+8)/3=-x
x+8=-3x
4x=-8
x=-2

回答2:

x=-5/6,-5/18,2.8,-2

回答3:

3-6(x+2/3)=2/3