Đáp án + Giải thích các bước giải:
abc x 9 = 1abc
abc x 9 = 1000 x abc
abc x 9 - abc = 1000
abc x ( 9 -1 ) = 1000
abc x 8 = 1000
abc = 1000 : 8
abc = 125
Vậy abc = 125
hok tốt ạ ~~~!!!
Đáp án:
Giải thích các bước giải:
Gọi số cần tìm là abc
Ta có :
abc x 9 = 1000 + abc
abc x ( 9 - 1 ) = 1000
Vậy số cần tìm là : 125
Xin hay nhất cho nhóm ạ
Chúc bạn học tốt !
Ai làm giúp e với ạ .ko cần dài đâu ạ
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