5 (- 3 )( 5x 4 11 July 8, 2019 16 32 64 128 5 2x 3 )- 4 5x 7 )= 19 2 x 11 5 3 5x4 11 3 5x 11 4 2 5 5 x 5 x 5 x 5 x 5
