abc2- 2abc=5778
abc x 10 + 2 - abc + 2000 = 5778
abc x 10 + 2 - abc = 5778 + 2000
abc x 10 + 2 - abc = 7778
abc x 9 = 7778 - 2
abc x 9 = 7776
abc = 7776 : 9
abc = 864
Vậy abc = 864
K mik mik k lại cho!
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