№ 648
а) 3a + 6b = 3 x ( a + 2b )
б) 2X - 8y = 2 x ( X - 4y )
в) 3m + 12 = 3 x ( m + 4 )
г) 7n - 14 = 7 x ( n - 2 )
д) 18a + 9 = 9 x ( 2a + 1 )
е) 10X - 25y = 5 x ( 2X - 5y )
ж) 8a + 24b - 12 = 8a + ( 2b - 1 ) x 12
з) - 49y - 14 y - 63 = - 63y - 63 = - 63 x ( y + 1 )
и) 36p - 24p + 54 = 12p + 54 = 6 x ( 2 + 9 )