[tex]a)2a + 2b = 2( \frac{2a}{2} + \frac{2b}{2}) = 2(a + b) \\ \\ b)2x + 2y = 2( \frac{2x}{2} + \frac{2y}{2}) = 2(x + y) \\ \\ c)2d - 2c = 2( \frac{2d}{2} + \frac{ - 2c}{2}) = 2(d - c) \\ \\ g)2n + 2 = 2( \frac{2n}{2} + \frac{2}{2}) = 2(n + 1) \\ \\ h)2 + 2k = 2( \frac{2}{2} + \frac{2k}{2}) = 2(1 + k) \\ \\ i)4a + 6b = 2( \frac{4a}{2} + \frac{6b}{2}) = 2(2a + 3b) \\ \\ m)14 - 10a = 2( \frac{14}{2} + \frac{ - 10a}{2}) = 2(7 - 5a) \\ \\ n)30x - 2 = 2( \frac{30x}{2} - \frac{2}{2}) = 2(15x - 1) \\ \\ o)30x - 34 = 2( \frac{30x}{2} - \frac{34}{2}) = 2(15x - 17) [/tex]
