Solve for X: -7/4(-x) + 2x - 5(x+3) = -x Linear Equation

Question

74(x)+2x5(x+3)=x -\frac{7}{4}(-x)+2x-5(x+3)=-x

x=? x=\text{?}

Video Solution

Step-by-Step Solution

To solve the given linear equation 74(x)+2x5(x+3)=x -\frac{7}{4}(-x) + 2x - 5(x + 3) = -x , follow these steps:

  • Step 1: Distribute the coefficients across the terms within parentheses:
    The term 74(x) -\frac{7}{4}(-x) becomes 74x \frac{7}{4}x because 74×x=74x -\frac{7}{4} \times -x = \frac{7}{4}x .
    The term 5(x+3) -5(x + 3) can be expanded to 5x15 -5x - 15 .
  • Step 2: Simplify the equation by combining like terms:
    The equation becomes 74x+2x5x15=x \frac{7}{4}x + 2x - 5x - 15 = -x .
  • Step 3: Combine the x x -terms on the left side:
    Combine: 74x+2x5x \frac{7}{4}x + 2x - 5x .
    Converting all terms to a common denominator, 2x=84x 2x = \frac{8}{4}x and 5x=204x -5x = \frac{-20}{4}x . Thus,
    74x+84x204x=54x \frac{7}{4}x + \frac{8}{4}x - \frac{20}{4}x = \frac{-5}{4}x .
  • Step 4: The equation simplifies to:
    54x15=x \frac{-5}{4}x - 15 = -x .
  • Step 5: Isolate the x x terms onto one side:
    Add x x to both sides, treating x -x as 44x \frac{-4}{4}x :
    54x+x15=0 \frac{-5}{4}x + x - 15 = 0 , which simplifies to 14x15=0 \frac{-1}{4}x - 15 = 0 .
  • Step 6: Isolate x x :
    Add 15 15 to both sides:
    14x=15 \frac{-1}{4}x = 15 .
  • Step 7: Solve for x x :
    Multiply both sides by 4 -4 to isolate x x :
    x=15×4 x = 15 \times -4 .
    Thus, x=60 x = -60 .

Therefore, the solution to the equation is x=60 x = -60 .

Answer

60 -60