6x 8 ) ( 5x 1 )= 42 July 8, 2019 16 32 64 128 6x 8 )+( 5x 1 )= 42 4 5 (8x + 20) = 6 (6x + 15) (5 6-8x) 4=1 2 (4 6x+5 8) 1 6=6 5