8) \( 2 \cdot 5+2 \cdot 7-2 \cdot 4= \) 9) \( 10 \cdot(3+8-6)= \) 10) \( (4+8-3+5) \cdot 4+2= \) 11) \( (6+8) \div 2+18 \div(5+4)= \) 12) \( 8+(10-15 \div 3)+3 \cdot 4-6= \)

First Line: Let’s break it down into smaller pieces! For the first equation \( 2 \cdot 5 + 2 \cdot 7 - 2 \cdot 4 \), you can factor out the 2, simplifying it to \( 2 \cdot (5 + 7 - 4) \). This way, it becomes much easier to calculate and makes you look like a math wizard! Second Line: For a real-world application, consider how these kinds of calculations are used in budgeting. If you’re evaluating expenses for a party, you might need to quickly add and subtract costs (like food, decorations, and venue), just like in the equations above. Even simple calculations can lead to better financial decisions!