Răspuns :
a + b = 35
a - b = 7
a × b =?
a |----------| 7 |
b |----------|
35 - 7 = 28
28 ÷ 2 = 14
b = 14
a = 14 + 7 a = 21
14 × 21 = 294
a + b = 35
a - b = 7
a × b =?
a |----------| 7 |
b |----------|
35 - 7 = 28
28 ÷ 2 = 14
b = 14
a = 14 + 7 a = 21
14 × 21 = 294