Question

determinați numerele de forma: 5x3y cu bara deasupra divizibil cu 6​

Answer 1

5x3y ⋮ 6 => 5x3y ⋮ 2 => y = {0, 2, 4, 6, 8}

5x3y ⋮ 6 => 5x3y ⋮ 3 => 5 + x + 3 + y ⋮ 3

y = 0 => 5 + 3 + 0 + x ⋮ 3 => x = 1, 4, 7

5130, 5430, 5730

y = 2 => 5 + 3 + 2 + x ⋮ 3 => x = 2, 5, 8

5232, 5532, 5832

y = 4 => 5 + 3 + 4 + x ⋮ 3 => x = 0, 3, 6, 9

5034, 5334, 5634, 5934

y = 6 => 5 + 3 + 6 + x ⋮ 3 => x = 1, 4, 7

5136, 5436, 5736

y = 8 => 5 + 3 + 8 + x ⋮ 3 => x = 2, 5, 8

5238, 5538, 5838

Answer 2

Răspuns:

5034;x=0. y=4. ;5130 x=1. y=0; 5232. x=2. y=2; 5334 x=3; y=4; 5430. x=4; y=0. 5532. x=5; y=2; 5634. x=6; y=4. 5730. x=7: y=0. 5832. x=8. y=2; 5934 ; x=9. y=4