Question

tìm số abc biết   abc6 - 2889 = 6abc

Answer 1

abc6-2889=6abc

abcx10+6-2889=6000+abcx1

abcx10+6-abcx1=6000+2889

abcx(10-1)+6=8889

abcx9+6=8889

abcx9=8889-6

abcx9=8883

abc=8883:9

abc=987

=>abc=987