a) -1,5 = -15/10 = -3/2
0,75 = 75/100 = 3/4
-3/2x+3/4 = 0 amplifici pe -3/2x cu 2
-6x+3 = 0
-6x= -3
x= 3/6 = 1/2
1/2x-1/4 = 0
1/2x = 1/4
x = 1/4* 2
x= 1/2 => sunt echvalente
b) V8 = 2V2
V2x+2V2= 0
V2x = -2V2
x= -2V2/V2
x= -2
-1/V3 rationalizezi cu V3 = -V3/3
-V3/3x -2V3/3 = 0
-V3/3x=2V3/3
-x = 2V3/3* 3/V3
-x = 2
x = -2 => sunt echivalente
