Question

subtract: (9c + 9) - (9c + 5)

Explanation:

Step1: Remove parentheses

To subtract the two expressions, we first remove the parentheses. Remember that when we subtract a sum, we subtract each term inside the parentheses. So, \((9c + 9) - (9c + 5)\) becomes \(9c + 9 - 9c - 5\).

Step2: Combine like terms

Next, we combine the like terms. The \(9c\) and \(-9c\) are like terms, and the \(9\) and \(-5\) are like terms. Combining \(9c - 9c\) gives \(0\), and combining \(9 - 5\) gives \(4\). So, \(9c - 9c + 9 - 5 = 0 + 4 = 4\).

Answer:

\(4\)