[cal828]

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