Math Problem Statement

Solve for the value/s of x in the given equations: 1. 3x/4 - 6 = x/4 2. x - 8/3 - 1/x = 0 3. x + 2 = 9/(x + 2) 4. x + 2 = 5x/(x - 4) - 14/(x - 4) 5. 1 - (x - 4)/(1 - x) = 12/(x - 1) 6. 3x/(2x - 5) - 7/(3x + 1) = 11/4 7. (x + 2)/(x - 2) - (x - 2)/(x + 2) = 7/4

Solution

Let's go through these equations one by one.

1. 3x46=x4\frac{3x}{4} - 6 = \frac{x}{4}

  • Step 1: Eliminate the fractions by multiplying the entire equation by 4: 3x24=x3x - 24 = x
  • Step 2: Move all terms involving xx to one side: 3xx=243x - x = 24
  • Step 3: Simplify: 2x=242x = 24
  • Step 4: Solve for xx: x=12x = 12

2. x831x=0x - \frac{8}{3} - \frac{1}{x} = 0

  • Step 1: Move 83\frac{8}{3} and 1x\frac{1}{x} to the other side: x=83+1xx = \frac{8}{3} + \frac{1}{x}
  • Step 2: Multiply through by xx to eliminate the fraction: x2=83x+1x^2 = \frac{8}{3}x + 1
  • Step 3: Rearrange to form a quadratic equation: 3x28x3=03x^2 - 8x - 3 = 0 Now you can solve this quadratic equation using the quadratic formula.

3. x+2=9x+2x + 2 = \frac{9}{x + 2}

  • Step 1: Multiply both sides by x+2x + 2: (x+2)2=9(x + 2)^2 = 9
  • Step 2: Take the square root of both sides: x+2=±3x + 2 = \pm 3
  • Step 3: Solve for xx:
    • If x+2=3x + 2 = 3, then x=1x = 1
    • If x+2=3x + 2 = -3, then x=5x = -5

4. x+2=5xx414x4x + 2 = \frac{5x}{x - 4} - \frac{14}{x - 4}

  • Step 1: Combine the right-hand side: x+2=5x14x4x + 2 = \frac{5x - 14}{x - 4}
  • Step 2: Multiply both sides by x4x - 4 to eliminate the fraction: (x+2)(x4)=5x14(x + 2)(x - 4) = 5x - 14 Now expand both sides and simplify to form a quadratic equation to solve for xx.

5. 1x41x=12x11 - \frac{x - 4}{1 - x} = \frac{12}{x - 1}

  • Step 1: Simplify 1x41x1 - \frac{x - 4}{1 - x} using properties of negative signs: 1x41x=1+1=21 - \frac{x - 4}{1 - x} = 1 + 1 = 2 So the equation becomes: 2=12x12 = \frac{12}{x - 1}
  • Step 2: Multiply both sides by x1x - 1: 2(x1)=122(x - 1) = 12
  • Step 3: Solve for xx: 2x2=122x=14x=72x - 2 = 12 \quad \Rightarrow \quad 2x = 14 \quad \Rightarrow \quad x = 7

6. 3x2x573x+1=114\frac{3x}{2x - 5} - \frac{7}{3x + 1} = \frac{11}{4}

For this equation, you need to find a common denominator on the left-hand side, then solve as a rational equation.

7. x+2x2x2x+2=74\frac{x + 2}{x - 2} - \frac{x - 2}{x + 2} = \frac{7}{4}

This can be solved by first combining the fractions on the left side.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Quadratic Equations
Rational Equations

Formulas

ax + b = c
(x + a)(x - b) = c
(a/x) + (b/y) = c

Theorems

Basic principles of solving equations
Cross-multiplication in rational equations
Quadratic equation solving methods

Suitable Grade Level

Grades 8-10