Solve Linear Equation: 3x+4+x+1=9 Step-by-Step

To solve the given equation $3x + 4 + x + 1 = 9$, we'll proceed step-by-step:

• Step 1: Combine like terms on the left side
  Combine the terms with $x$: $3x + x = 4x$.
  Combine the constant terms: $4 + 1 = 5$.
  The equation becomes $4x + 5 = 9$.
• Step 2: Isolate the variable $x$
  Subtract 5 from both sides to move the constant term to the right side:
  $4x + 5 - 5 = 9 - 5$, which simplifies to $4x = 4$.
• Step 3: Solve for $x$
  Divide both sides by 4 to solve for $x$:
  $\frac{4x}{4} = \frac{4}{4}$, which simplifies to $x = 1$.

Therefore, the solution to the equation is $x = 1$.