7 9 x ) 42 July 8, 2019 16 32 64 128 42 7 9 x 4 7 9 x ≥ 42 12 7 x 9 42 7 left 9 x right )= 42 42 7 x 9 45 7 9 x greater than or equal to 42 9 15 x 7 42 36 7 x 42 9 3 3 Cadre 2 9 7 x 42 action 7 9 x 4 5 7/9 x 4 72 ÷ 9
