(1)1/4x-1/2=3/4
(2)7x-5/4=3/8
(3)2x-1/6=5x+1/8
(4)1/2x-7=9x-2/6
(5)1/5x-1/2(3-2x)=1
(6)2x+1/3-5x-1/6+1
(7)1/7(2x+14)4-2x
(8)3/10(200+x)-2/10(300-x)=300乘9/25
+1=x-1
=
x+-=1
=x-
y-=2-
-=
=5-
x-(x-1)=(x-)
-=3
(1)3-x/2=x+4/3
(2)x+2/5=x/4
(3)1/4(x+1)=1/3(x-1)
(4)2x-1/3=x+2/4-1
(5)1/2(x-1)=2-1/5(x+2）