10 2x 7 4x 5 July 8, 2019 16 32 64 128 10 2x 7 )- 5 4x 2 )=- 60 (- 1 2x 7 10 3 4x 1 5 2x 3y 3 7 4x 5y 5 10 10 2x-7 10 2x-7 4x+0 88=2
