Ma poate ajuta cineva cu ex 1 si 2?? Va rog mult! Dau coroana

Răspuns:
1.
x + 2/3 = 2 • 75/100
x + 2/3 = 75/50
x + 2/3 = 3/2
x = 3/2 - 2/3
x = (9-4)/6
x = 5/6
2.
(x+3)•5 = 80:4
x+3 = 20:5
x+3 = 4
x=4-3
x=1