The GCF is 7a.
Since 7a is a factor of 14ab, it is automatically the GCF.
7a 7a * 4 = 28a 7a * 7b = 49ab
(7a - 1)(6a + 1)
7a
The greatest common factor is 7a.21ab+35a=7a(3b+5)GCF(21ab, 35a) = 7a. How? Factor out each term to get:21ab = 3 x 7 x a x b35a = 5 x 7 x aThe factors that occur both in 21ab and 35a are 7 and a. Therefore, the GCF is 7a.
7a-7 = 7(a-1).
Find the GCF of 21 and 35. 3 x 7 = 21 5 x 7 = 35 The GCF is 7. Find what is common between ab and a. a is common. The answer is 7a.
Yes.
Yes.
7a(2a - 3)
(5a + 2)(a + 1)