(7) \( 7(2-4)-6= \)

Let's break it down! First, you need to deal with the expression inside the parentheses: \(2 - 4 = -2\). Then replace it back into the expression, making it \(7(-2) - 6\). Next, multiply: \(7 \times -2 = -14\). Finally, subtract 6: \(-14 - 6 = -20\). So, the answer is \(-20\). When simplifying expressions, it’s easy to rush through the steps. A common mistake is forgetting the order of operations—PEMDAS (Parentheses, Exponents, Multiplication and Division from left to right, Addition and Subtraction from left to right) is your best friend! Taking your time to follow each step carefully will yield the correct result every time.