2x+27=-11
=>2x=-38
=>x=-19
2x-35=15
=>2x=50
=>x=25
10-x=-25
=>x=10+25=35
3x+17=2
=>3x=-15
=>x=-5
(2x-3)(6-2x)=0
=>2x-3=0 hoặc 6-2x=0
=>x=3 hoặc x=3/2
x+1/2=0
=>x=-1/2
3/4x=1/2
=>x=1/2:3/4=1/2*4/3=4/6=2/3
(5+4/7):x=13
=>39/7:x=13
=>x=39/7:13=3/7
2x-3/7=6+2/7
=>2x=6+5/7=47/7
=>x=47/14