Answer:To simplify the expression , we need to combine the like terms in the numerator and then divide by 2. Step 1: Combine like terms in the numerator. Step 2: Rewrite the expression with the combined numerator. Step 3: Divide each term in the numerator by 2. Step 4: Simplify each term. Therefore, the simplified form of is 5a -17a+4/2 is - 6a -7