1) (14ab) / (49a^3b^2) = 14 / 49a^-3 = 2 / 7a^-3 = 2a^3 / 7
2) (3x) / (x^2 + 4x) = 3x / x(x + 4) = 3 / (x + 4)
3) (y^2 - z^2) / (2y + 2z) = (y + z)(y - z) / 2(y + z) = (y - z) / 2
1) (14ab) / (49a^3b^2) = 14 / 49a^-3 = 2 / 7a^-3 = 2a^3 / 7
2) (3x) / (x^2 + 4x) = 3x / x(x + 4) = 3 / (x + 4)
3) (y^2 - z^2) / (2y + 2z) = (y + z)(y - z) / 2(y + z) = (y - z) / 2