2 3 x 15 20 July 8, 2019 16 32 64 128 2 x 15 )=( 3x 20 2 x 15 )+( 3x 20 )= 180 15 2 2 x 3 2024 3 5 x 15 )= 1 2 x 20 2 15 x 3 2 x 3 x 15