Problem 42701. multiple of nine?

Solution 1457574

Submitted on 6 Mar 2018 by J. S. Kowontan

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Test	Status	Code Input and Output
1	Pass	x = 1; y_correct = false; assert(isequal(multipleof9(x),y_correct))
2	Pass	x = 9; y_correct = true; assert(isequal(multipleof9(x),y_correct))
3	Pass	x = 10; y_correct = false; assert(isequal(multipleof9(x),y_correct))
4	Pass	x = 111222; y_correct = true; assert(isequal(multipleof9(x),y_correct))