Answer:
15*(3 + 1)
Explanation:
Greatest Common Factor (GCF) and Distributive Property
To find the GCF of two quantities, we find their prime factors:
45 = 3 * 3 * 5
15 = 3 * 5
We take the common factors 3*5=15. The GCF is 15.
We want to rewrite the expression
![45+15](https://img.qammunity.org/2021/formulas/mathematics/college/66x09ivpxxg3oxphy1szxkeyv2h3lggw35.png)
That is equivalent to
![15*3+15](https://img.qammunity.org/2021/formulas/mathematics/college/zo1c0qwsicib49ng62yk0ardzjxo5b2f0k.png)
Note we used the GCF in each term. Now we use the distributive property to factor the 15 out of the expression:
![\boxed{15*(3 + 1)}](https://img.qammunity.org/2021/formulas/mathematics/college/fzggttjngkfpik4vd5bqto9cvkjnccpomr.png)
Of course, it can be further simplified and operated, but we have rewritten the expression as required.