15 5 x 4 )=- 12 3 July 8, 2019 16 32 64 128 15 x 4 ) 5 12 3x 9 5 x 4 3 12 15 15 16 4 5 x 7 12 4 3 15 x 4 − 8 5 3x 12 − 8 Resolva a expressão 9 5 x 4 3 12 15 4 x 3 )+ 12 15 5 x 6
