Răspuns:
Explicație pas cu pas:2x/5=3/10+1/2 (factor comun 10)4x=3+54x=8x=2----------------------------------------------0,3x-1=0,20,3x=1,2x=4----------------------------------2x*5/4=10/35x/2=10/315x=20x=4/3-------------------------3/4: x=3/8x=8:4=2--------------------5/14:x + 1,25=0-0,35/x= -1,25x=3,57
Am avut un ex asemanator….