Question

1. (2n - 9) - 5(-2.4n + 4)

Explanation:

Step1: Distribute the -5

Multiply -5 with each term inside the parentheses: \((2n - 9) + 12n - 20\) (since \(-5\times(-2.4n)=12n\) and \(-5\times4 = -20\))

Step2: Combine like terms

Combine the \(n\)-terms and the constant terms: \(2n + 12n = 14n\) and \(-9 - 20 = -29\)
So the simplified expression is \(14n - 29\)

Answer:

\(14n - 29\)