Solve for X: Finding X in ½(8-x) + ½x = 12-x Linear Equation

Question

Solve for X:

12(8x)+12x=12x \frac{1}{2}\cdot(8-x)+\frac{1}{2}x=12-x

Video Solution

Solution Steps

00:00 Solve
00:04 We want to isolate the unknown X
00:07 Open parentheses properly, multiply by each factor
00:24 Divide 8 by 2
00:27 Positive times negative is always negative
00:38 Simplify what we can
00:44 Isolate the unknown X
01:00 Simplify what we can
01:10 Multiply by minus 1 to convert from negative to positive
01:20 Negative times negative is always positive
01:25 And this is the solution to the problem

Step-by-Step Solution

To solve the equation 12(8x)+12x=12x \frac{1}{2} \cdot (8-x) + \frac{1}{2}x = 12 - x , follow these steps:

  • Step 1: Use the distributive property on the left side of the equation.
    • Distribute 12 \frac{1}{2} across (8x) (8-x) :
    • This gives us 12812x+12x \frac{1}{2} \cdot 8 - \frac{1}{2} \cdot x + \frac{1}{2}x .
    • Simplify the terms: 412x+12x 4 - \frac{1}{2}x + \frac{1}{2}x .
  • Step 2: Simplify the left side of the equation:
    • The terms 12x -\frac{1}{2}x and 12x \frac{1}{2}x cancel each other out.
    • Thus, the left side simplifies to 4 4 .
  • Step 3: Set the simplified equation equal to the right side:
    • So, we have 4=12x 4 = 12 - x .
  • Step 4: Solve for x x using basic algebra:
    • Add x x to both sides to move x x to one side: x+4=12 x + 4 = 12 .
    • Subtract 4 from both sides to solve for x x : x=124 x = 12 - 4 .
    • This results in x=8 x = 8 .

Therefore, the solution to the equation is x=8 x = 8 .

Answer

8 8