Answer:
if you multiply the denominator by the AB^3 by 7 you wll get your common factor
Explanation:
Question 15:
5(x - 9) - 2(x + 3)
= (5)(x) + (5)(-9) - (2)(x) - (2)(3)
= 5x - 45 - 2x - 6
= 3x - 51
= 3(x - 17).
Question 16:
The terms 36x, 18y and 9 have GCF of 9.
Hence 36x - 18y + 9 = 9(4x - 2y + 1).
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