Răspuns:
1.
a)6x=20 =>x=10/3
b)17/8 + x = 5/8 =>x=5/8 - 17/8=(-12/8)=(-3/2)
c)x=-rad14•7rad2 =>x=(-49rad2)
2.
b)6xrad5-30rad2=8xrad5+20rad2
-2xrad5=50rad2
x=-25rad2/rad5= -25rad10/5 = -5rad10
