2 5 x 7 8 x 1 3 July 8, 2019 16 32 64 128 X 2 7 x 1 8 x 4 5 x 3 6 2 5 x 1 3 x 7 8 as a fraction X 2x 2 5 x 8 6 7 x 1 3 3x 8 5 x 7 2 x 1 2 4 5 x 1 3 7 x 3 1 8 Tính 7 8 x 2 5 1 5 x 2 3 5 x 3 )( x 7 )-( 5x 1 )( x 2 )= 8 1 2 x 5 8 y 1 3 x 4 7 y 5 x 7 = 35 2 5/8 x 1 3/7
