2x 3 3x 10 0 July 8, 2019 16 32 64 128 X 3 2x 2 3x 10 0 2x 3 3x 2 9x 10 0 2x y 3 0 3x 7y 10 0 by substitution method 3x 3 2x 2 15x 10 0 6 2x y 3 0 3x 7y 10 0 2x 1 3 x 3 5 3x 7 10 0
