Question

Write the sum of the numbers as the product of their GCF and another sum 15+81

Answer 1

Explanation:

3

Answer 2

63+15=3×(21+5)
The prime factors of
63
are
3
×
3
×
7

and those of
15
are
3
×
5

As only
3
is common, GCF is
3

and as such
63
+
15
can be written as
63
+
15
=
3
×
21
+
3
×
5
=
3