6 5 x 7 = 9 5 x − 8 July 8, 2019 16 32 64 128 5 7 5 9 x 6 8 6 10 x 2 4 4 2 5 x 7 = 35 6 5 x + 7 = 9 5 x − 8 −9 7 − (−5 8)
