6 7x 3 4 July 8, 2019 16 32 64 128 6 7x 3 4y 15 6 7x 3 )= 42x 18 6 7x 3 4 5 12 7x 6 3 4x 6 7x 3 6 x 4 4x2 6 7x 3 12 3 6 7x 4 2 2 x 6 )+ 7x 3 3x 4 7x 3 )-( 3x 4 )= 6 6 7x 3 4 7x 5 7 7x 6 4x 3 180 7x 6 4x 3 90 7x 6 9 3 4 7x 6 3 5x 4 7x 6 (- 3x 3 )=- 48
