Question

simplify the expression: (1 + 7k)(3) =

Explanation:

Step1: Apply distributive property

We use the distributive property \(a(b + c)=ab+ac\), here \(a = 3\), \(b=1\), \(c = 7k\). So we have \(3\times1+3\times7k\).

Step2: Calculate each term

Calculate \(3\times1 = 3\) and \(3\times7k=21k\). Then combine the terms.

Answer:

\(3 + 21k\)