5 7 8 y ) 4 3 8 7 1 8 July 8, 2019 16 32 64 128 5 7 8 y )+ 4 3 8 7 1 8 8 รท 5/8 (4 5-y) *5 8=8 7 4 5(-8y - 7) - 3 9(6 - 9y)
