13-12=1. Added to the original 1 = 2
10-4=6
6/2 (from the first line) = 3 !
13 - 5 + 112 = 9
-1
5 will make 12 and 13 a Pythagorean triad.
21 - 11 22 - 12 23 - 13
that does not make any sense
13
5, 12, 13 and 6, 8, 10
11 + 12 + 13 =36
12 and 1
3x4=12 12+1=13 come on I'm in year 7 and i knew that right away
1.3 ina fractionof 12 =13/121.3/12 * 10/10 = 130/120 or 13/12
12/1 thru 13/10