Răspuns:
Explicație pas cu pas:
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( abc + bca + cab ) : ( a + b + c ) = 111
( 100a+10b+c + 100b+10c+a + 100c+10a+b) : ( a+b+c) =
( 111× a + 111 ×b + 111 ×c) : ( a+b+c) =
111 × ( a+b+c) : ( a+b+c) = 111
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abc = 100a + 10 b + c
bca = 100b + 10c + a
cab = 100c + 10 a + b
