Question

subtract. (9k + 7) - (9k + 2)

Explanation:

Step1: Remove the parentheses

To subtract the two expressions, we first remove the parentheses. When we have a subtraction sign in front of a parentheses, we need to distribute the negative sign to each term inside the parentheses. So, \((9k + 7) - (9k + 2)\) becomes \(9k + 7 - 9k - 2\).

Step2: Combine like terms

Now, we combine the like terms. The \(9k\) and \(-9k\) are like terms, and the \(7\) and \(-2\) are like terms. Combining \(9k - 9k\) gives \(0\), and combining \(7 - 2\) gives \(5\). So, \(9k - 9k + 7 - 2 = 0 + 5 = 5\).

Answer:

\(5\)