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#8
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![]() R7
$1 Tri 3//5,6,7//1,2,4,5,6,7=$15 $2 Tri 3//2,5,6,7//2,5,6,7=$24 R8 $5 Tri 7//2,4,6//2,4,6=$30 $5 Tri 2,4,6//7//2,4,6=$30 |