Question

i) subtract,
(5a + 7) - (5a + 1)

Explanation:

Step1: Remove parentheses

To subtract the two expressions, we first remove the parentheses. When we remove the parentheses from \((5a + 7) - (5a + 1)\), we distribute the negative sign to the terms inside the second parentheses: \(5a + 7 - 5a - 1\).

Step2: Combine like terms

Next, we combine the like terms. The \(5a\) and \(-5a\) are like terms, and the \(7\) and \(-1\) are like terms. Combining \(5a - 5a\) gives \(0\), and combining \(7 - 1\) gives \(6\). So, \(0 + 6 = 6\).

Answer:

\(6\)