a.

First, let’s simplify the expression inside the parentheses: . Now we have . To multiply, you can rewrite it as . So the final answer is or approximately when converted to a decimal.

If you want to impress your friends with math, remember that fractions can be simplified by finding common factors! It’s all about finding ease in the numbers without the hassle of complex calculations. Plus, practicing with fractions can make you a pro at converting them to decimals in no time!