-3 (2x + 7) solve for x step by step

1 answer

To solve the equation \(-3(2x + 7) = 0\) for \(x\), we will go through the steps one by one.

  1. Distribute the -3: \[ -3 \cdot 2x + (-3) \cdot 7 = -6x - 21 \] So, the equation becomes: \[ -6x - 21 = 0 \]

  2. Add 21 to both sides: \[ -6x - 21 + 21 = 0 + 21 \] This simplifies to: \[ -6x = 21 \]

  3. Divide both sides by -6: \[ x = \frac{21}{-6} \] This can be simplified to: \[ x = -\frac{21}{6} \]

  4. Simplify the fraction: \[ x = -\frac{7}{2} \]

So the solution to the equation \(-3(2x + 7) = 0\) is: \[ \boxed{-\frac{7}{2}} \]