abc7-abc=1429
abcx10+7-abc=1429
abcx10-abc=1429-7
abcx9=1422
abc=1422:9
abc=158
Vạy abc=158
abc7 - abc = 1429
abc x 10 + 7 - abc = 1429
abc x 10 - abc = 1429 - 7
abc x (10 - 1) = 1422
=> abc = 1422 : 9
abc = 158
vậy abc = 158
t i c k nha!! 465745747856858976976908096897685785685686586585
abc7 - abc = 1429
=> (10 × abc + 7) - abc = 1429
=> 10 x abc + 7 - abc = 1429
=> 9 x abc + 7 = 1429
=> 9 x abc = 1429 - 7
=> 9 x abc = 1422
=> abc = 1422 : 9
=> abc = 158
Vậy abc = 158
Ủng hộ mk nha ♡_♡^_-
abc7-abc=1429
<=>abc x 10 + 7 - abc = 1429
<=>abc x 10 - abc = 1429 - 7 = 1422
<=>9 x abc = 1422 <=> abc = 1422 : 9 = 158
Vậy abc=158
