6 x 1 )- 5 x 2 )= 20 July 8, 2019 16 32 64 128 5 x 1 )+ 4 6 x 2 )- 20 90 6 x 1 7 20 2 x 5 1 2 5/6 x = 1 1/6 1/17 2 x+1 6 +5=6 2 x 2 5 6*(x+1 5)=25 2