2) \( (-15):(-3)= \)

To solve the division problem \((-15) : (-3)\), remember that dividing two negative numbers results in a positive number. Therefore, you can simplify this as \(15 \div 3\), which equals \(5\). So, \((-15) : (-3) = 5\)! When dividing negative numbers, many people mistakenly think the result should remain negative. Keep in mind: two negatives cancel each other out, leading to a positive outcome! Just like double negatives in grammar lead to a positive statement!