18)
a)x+3/2-x-1/4+5/12=-x/4-2x+5/6
6x+18-3x+3+5/12=-6x-8x+20/24
3x+20/12=-14x+20/24
24(3x+20)=12(-14x+20)
72x+480=-168x+240
72x+168x=-480+240
240x=-240
x=-240/240
x=-1
b)2x-1/20-x-1/12-7/12=1/4
2x-1/20-x-8/12=1/4
24x-12-20x-160/240=1/4
-4x-172/240=1/4
4(-4x-172)=240
-16x-688=240
-16x=688+240
-16x=
x=928/-16
x=58
c)x-4/2-2x+1/3+211/12=x/6-3/4
x-4//2-2x+1/3+35/12=4x-18/24
6x-24-8x+4+35/12=4x-18/24
-2x+15/12=4x-18/24
12(4x-18)=24(2x+15)
48x-216=48x+360
48x-48x=216+360
576
sucees
