a) 9x + 28 = 2755
9x = 2755 - 28
9x = 2727
x = 2727 : 9
x = 303
510 + 14y = 762
14y = 762 - 510
14y = 252
y = 252 : 14
y = 18
b) 5y - 97 = 943
5y = 943 - 97
5y = 846
y = 846 : 5
y = 169 rest 1 sau y = 169, 02 depinde in ce clasa ești
410 - 7y = 151
7y = 410 - 151
7y = 259
y = 259 : 7
y = 37
