Question

simplify the expression:
7u + 8u

Explanation:

Step1: Identify like terms

The terms \(7u\) and \(8u\) are like terms (same variable \(u\) with same exponent 1).

Step2: Combine coefficients

Add the coefficients: \(7 + 8 = 15\). Then attach the variable \(u\), so \(7u + 8u=(7 + 8)u = 15u\).

Answer:

\(15u\)