化简求值题300道，一元一次方程300道（

1)12（2-3X）=4X+4

24-36X=4X+4

-40X=-20

X=1/2

(2)6-3（X+2/3）=2/3

6-3X-2=2/3

-3X=-10/3

X=10/9

(3)2（200-15X）=70+25X

400-30X=70+25X

-55X=-330

X=6

(4)3（2X+1）=12

6X+3=12

6X=9

X=3/2

(5)1/4X-1/2=3/4

(1/4)X=5/4

X=5

(6)7X-5/4 =3/8

7X=13/8

X=13/56

(7)2X-1/6 = 5X+1/8

-3X=7/24

X=-7/72

(8)(1/2)X-7 = 9X-2/6

-(17/2)X=20/3

X=-20/51

(9)(1/5)X-1/2（3-2X）=1

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

(6/5)X=5/2

X=25/12

(10)2X+(1/3)-5X-(1/6)=1

-3X+(1/6)=1

-3X=5/6

X=-5/18