High School

Factor the expression [tex]$10r - 15$[/tex].

[tex]
\begin{aligned}
10r - 15 &= 5(\square)
\end{aligned}
[/tex]

Answer :

To factor the expression [tex]\(10r - 15\)[/tex], follow these steps:

1. Identify the Greatest Common Factor (GCF):
Look for the largest number that can divide both terms, [tex]\(10r\)[/tex] and [tex]\(-15\)[/tex], without leaving a remainder. In this case, the GCF is 5.

2. Factor Out the GCF:
Divide each term of the expression by the GCF and write the expression as a product:
- [tex]\(10r \div 5 = 2r\)[/tex]
- [tex]\(-15 \div 5 = -3\)[/tex]

3. Write the Factored Expression:
Now, place the GCF outside of the parentheses and put the results from step 2 inside the parentheses:
[tex]\[
10r - 15 = 5(2r - 3)
\][/tex]

So, the factored form of [tex]\(10r - 15\)[/tex] is [tex]\(5(2r - 3)\)[/tex].