Răspuns :
3 x a - 245 = 56 x 38
3 x a - 245 = 2128
3 x a = 2128 + 245
3a = 2373
a = 2373 : 3
a = 791.
3 x a - 245 = 2128
3 x a = 2128 + 245
3a = 2373
a = 2373 : 3
a = 791.
3a-245=56x38
3a-245=2128
3a=2128+245
a=2373:3
a=791
proba
(3x791-245):38=(2373-245):38=2128:38=56
3a-245=2128
3a=2128+245
a=2373:3
a=791
proba
(3x791-245):38=(2373-245):38=2128:38=56