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