x-x/2+ 1/2=2-x/3+2/3
x/2+x/3=2+2/3- 1/2
5x/6= 13/6
x= 13/5
2 、( x- 1)/2-(2x-7)/6 =(4x-5)/3- 1
x/2- 1/2-x/3+7/6 = 4x/3-5/3- 1
7/6- 1/2+ 1+5/3 = 4x/3+x/3-x/2
10/3=7x/6
x=30/7
3、3(2x- 1)= 2( 1-x)- 1
6x-3=2-2x- 1
8x=2- 1+3
8x=4
x= 1/2
4、 1-(6-x)/6 = 0.4[ 1+( 1+2x)/4]
1-( 1-x/6)= 0.4+0. 1 *( 1+2x)
1- 1+x/6 = 0.4+0. 1+0.2x
x/6-0.2x=0.5
-x/30=0.5
x=- 15
5、 15-(8-5x)=7x+(4-3x)
15-8+5x=7x+4-3x
5x+3x-7x=4+8- 15
x=-3
6 、( 3x+ 1)/2-2 =(3x-2)/ 10-(2x+3)/5
3x/2+ 1/2-2 = 3x/ 10- 1/5-2x/5-3/5
3x/2-3x/ 10+2x/5 = 2- 1/5-3/5- 1/2
8x/5=7/ 10
x=7/ 16
7、7(2x- 1)-3(4x- 1)= 4(3x+2)- 1
14x-7- 12x+3 = 12x+8- 1
14x- 12x- 12x = 8- 1-3+7
- 10x= 1 1
x=- 1 1/ 10
8、2(x-2)-3(4x- 1)+9( 1-x)
2x-4- 12x+3=9-9x
2x- 12x+9x=9-3+4
-x= 10
x=- 10
9、y-(y- 1)/2=2-(y+2)/5
y-y/2+ 1/2=2-y/5-2/5
y-y/2+y/5=2-2/5- 1/2
7y/ 10 = 1 1/ 10
y= 1 1/7
10 、( 0.4x+0.9)/0.5-(0.03+0.02 x)/0.03 =(x-5)/2
4x/5+0.45- 1-2x/3=x/2-5/2
4x/5-2x/3-x/2= 1-5/2-0.45
- 1 1x/30=-39/20
x= 1 17/22
1 1、2x+(3x- 1)= 16-(x+ 1)
2x+3x- 1 = 16-x- 1
5x+x= 15+ 1
6x= 16
x=8/3
12 、( x-3)/2-(4x+ 1)/5= 10
x/2-3/2-4x- 1/5= 10
-7x/2= 10+ 1/5+3/2
-7x/2= 1 17/ 10
x=- 1 17/35
13 、( x-3)/0.5-(x+4)/0.2= 1.6
2x-6-5x-20= 1.6
-3x=27.6
x=-9.2
14 、[ 2(x+ 1)]/3 = {[5(x+ 1)]/6 }- 1
2x/3+2/3=5x/6+5/6- 1
2x/3-5x/6=5/6- 1-2/3
-x/6=-5/6
x=5
15 、( 0. 1x-02)/0.2-(x+ 1)/0.5+x
There is no equation. .
16 、( 2x- 1)/6-(5x+ 1)/8 = 1
x/3- 1/6-5x/8- 1/8 = 1
-7x/24 = 1+ 1/8+ 1/6
-7x/24=3 1/24
x=-3 1/7
17 、( 3+x)/2-(2x+3)/3 =(3x+ 1 1)/6
3/2+x/2-2x/3- 1 = x/2+ 1 1/6
-x/6-x/2 = 1 1/6-3/2+ 1
-2x/3=4/3
x=-2
18、5(x+2)=2(5x- 1)
5x+ 10= 10x-2
-5x=- 12
x= 12/5
19、7(2x- 1)-3(4x- 1)= 4(3x+2)- 1
14x-7- 12x+3 = 12x+8- 1
2x-4= 12x+7
- 10x= 1 1
x=- 1 1/ 10
20、3(x-7)+5(x-4)= 15
3x-2 1+5x-20= 15
8x-4 1= 15
8x=56
x=7