Question

1. 2x + 4 + x = 19

Explanation:

Step1: Combine like terms

Combine the \(x\)-terms on the left side: \(2x + x + 4 = 19\) simplifies to \(3x + 4 = 19\).

Step2: Subtract 4 from both sides

Subtract 4 from each side: \(3x + 4 - 4 = 19 - 4\), which gives \(3x = 15\).

Step3: Divide by 3

Divide both sides by 3: \(\frac{3x}{3} = \frac{15}{3}\), so \(x = 5\).

Answer:

\(x = 5\)