X 3 1 2x 5 )= 20 July 8, 2019 16 32 64 128 3 x 5 )- 7 2x 1 )=- 9x 20 X 1 4 2x 3 5 1 20 10x 5 1 x )= 3 2x 2 )- 20 2 x 3 )- 4 x 1 )+ 3 x 5 )= 2x 20 2x 11 3 1 x 5 20 2x - 11 chia 3 + 1 x 5 = 20 2 x 1 )+ 3 x 5 )= 2x 20 3 x-5=x+3
