abc2 - 2abc =2142
abc2-2abc=2142. abc=....?
abc2 - 2abc = 2142
abc2 - 2abc = 2142
= > 2abc + 2214 = abc2
2000 + abc + 2214 = abc x 10 + 2
4212 + 2 + abc = abc x (9 + 1) + 2
4212 + 2 + abc = abc x 9 + abc + 2
4212 = abc x 9
abc = 486
Tìm số abc biết :
abc + ab,c = 184,8
abc2 - 2abc = 2142
abc9 + 5778 = 9abc
abc x 17 = 2abc
8abc - abc8 =3618
abc1 - 3105 = 1abc
abc x 9 = 6abc
2abc + 2214 = abc2
abc8 - 8abc = 522
tìm abc biết:
a) abc+ab,c=404,8 b) abc2 - 2abc=2142
a) 10.abc+abc=4048
11.abc=4048 =>abc=4048:11=368
=> abc=368
b) 10.abc+2-2000-abc=2142
9.abc=4140 =.abc=4140:9=460
=> abc=460
a)abc+ab,c=404,8 b)abc2-2abc=2142
abc2=2142+2abc
abc*10+abc=4048 abc*10+2=2142+2000+abc
abc*11=4048 cùng bớt cả 2 vế đi abc
abc=4048/11 abc*9+2=4142
abc*9=4142-2=4140
abc=4140/9=460
abc=368
abc2 - 2abc = 2142
abc2 - 2abc = 2142
<=> abc*10+2 - 2000 -abc = 2142
<=> abc*10-abc = 2142+2000 - 2
<=> abc*9 =4140
<=> abc = 460
Vậy abc = 460
=>(abc*10+2)-(2000+abc)=2142
=>(abc*10-abc)-(2000-2)=2142
=>abc*9-1998=2142
=>abc*9=2142+1998
=>abc*9=4140
=>abc=4140:9
=>abc=460
=>(abc*10+2)-(2000+abc)=2142
=>(abc*10-abc)-(2000-2)=2142
=>abc*9-1998=2142
=>abc*9=2142+1998
=>abc*9=4140
=>abc=4140:9
=>abc=460
abc2 + 423 = 2abc
abc2 + 423 = 2abc
abc x 10 + 2 + 423 = 2000 + abc
abc x 10 - abc x 1 = 2000 - 423 - 2
abc x 9 = 1575
abc = 1575 : 9
abc = 175
Giải hộ mình nha nhớ giải chi tiết đó
abc2+423=2abc
abcx10+2+423=2000+abc
abcx10-abc=2000-425
abcx9=1575
abc=1575/9=175
abc2 + 423 = 2abc
<=> abc * 10 + 2 + 423 = 2000 + abc
<=> abc * 10 -abc = 2000 - 425
<=> abc * 9 = 1575
=> abc = 1575 : 9
=> abc = 175
Vậy abc = 175
ABC2-2ABC=5778
abc2 -2abc =5778
abcx10+2-abc+2000=5778
abc x 10+2-abc=5778+2000
abc x 10- abc + 2=7778
abc x 9=7778-2
abc x 9=7776
abc=7776:9
abc=864
Vay abc=864
abc2 + 2abc = ?
abc2+2abc=abc x 10 + 2000+abc=abc x 11 + 2000
Vậy abc2+2abc=abc x 11+2000
Trả lời lại:abc2+2abc=abc*10+2+2000+abc=abc*11+2002
Vậy abc2+2abc=abc*11+2002