Step-by-step explanation:
Answer is in the photo
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Given:
The pair of composite numbers: 10 and 15
To find:
The greatest common factor (GFC) for the given pair of composite numbers.
Solution:
Two composite number are 10 and 15.
The factor forms of these two numbers are


It is clear that the common factor is 5 in both factor forms. So, the greatest common factor is

Therefore, the greatest common factor of 10 and 15 is 5.
Answer:
46
Step-by-step explanation:
72 + 58 + 2x + 3x = 360
5x = 230
x = 46