Question

15 - 4x + x = -3

Explanation:

Step1: Combine like terms

Combine the \(x\)-terms on the left side: \(15 - 4x + x = 15 - 3x\), so the equation becomes \(15 - 3x = -3\).

Step2: Subtract 15 from both sides

Subtract 15 from each side: \(15 - 3x - 15 = -3 - 15\), which simplifies to \(-3x = -18\).

Step3: Divide by -3

Divide both sides by \(-3\): \(\frac{-3x}{-3} = \frac{-18}{-3}\), so \(x = 6\).

Answer:

\(x = 6\)