5 8 x 9 77 − 12 3x 11 July 8, 2019 16 32 64 128 5 x 7 = 35 −9 7 − (−5 8) 9 15 + x - 8 5 = 21 77 5 3 – 7x = 8 9 – 11x 5 x - 9 7= -12 8