Răspuns :
algebric: 5ori x + 3= 18 / - 3 aritmetic: 5 ori x + 3 = 18
5 ori x= 15 /:5 5 ori x + 3= 18 - 3
x=3 5 ori x=15
x=15:5
x=3
5 ori x= 15 /:5 5 ori x + 3= 18 - 3
x=3 5 ori x=15
x=15:5
x=3