Ajutati-ma va rog la 20 , dau coroana !

a)(x+1)/4=5/6
6(x+1)=5*4
6x+6=20
6x=14
x=14/6=7/3
b)(x-2)/3-1/2=5/6
2(x-2)/6-3/6=5/6
2(x-2)-3/6=5/6 |*6
2(x-2)-3=5
2x-4-3=5
2x-7=5
2x=12
x=12/2
x=6