Question

解方程(1)1/4x-1/12x=1/3 (2)x+1/2-x-1/3=1 (3)2x+1/3-(x-5)=2/3 (4

Answer 1

（1）1/4x-1/12x=1/3

x/6=1/3

x=2

(2)(x+1)/2-(x-1)/3=1

3(x+1)-2(x-1)=6

3x+3-2x+2=6

x=1

(3)2x+1/3-(x-5)=3/2

2(2x+1)-6(x-5)=9

4x+2-6x+30=9

-2x=-23

x=23/2

(4)x+4/5-x+2/10=x-2/2

2(x+4)-(x+2)=5(x-2)

2x+8-x-2=5x-10

x-5x=-10-6

-4x=-16

x=4

(5)2.4-x-4/2.5=3/5x

12-2(x-4)=3x

12-2x+8=3x

-2x-3x=-20

-5x=-20

x=4

(6) x-2/3-x-1/2=x+1

2(x-2)-3(x-1)=6(x+1)

2x-4-3x+3=6x+6

-x-6x=6+1

-7x=7

x=-1