5 x 7 )= 3 x 4 )- 13 July 8, 2019 16 32 64 128 5 x 6 y 13 3 x 4 y 7 4 3 x 7 2 5 7 9 x 4 13 2 x 3 )/ 7 x 5 3 13 x 4 21
