3 7 1 2x 5 x 9 July 8, 2019 16 32 64 128 3 7 1 2x 5 x 9 resultado 3 x 5 )- 7 2x 1 )=- 9x 20 3 7 2x 3 3 5 x − 9 x 1 responses 7 2x 3 )+ 2 x 1 )- 5 x 9 )= 3x 10 5 x 7 = 35 3 x-5=x+3
