Math Problem Statement

x/12 - x-3/3=1/2

Solution

We are tasked with solving the equation:

x12x33=12\frac{x}{12} - \frac{x - 3}{3} = \frac{1}{2}

Step-by-step solution:

  1. Find a common denominator on the left-hand side. The terms have denominators 12 and 3. A common denominator between 12 and 3 is 12.

    Rewrite the second term so that it has a denominator of 12: x33=4(x3)12=4x1212\frac{x - 3}{3} = \frac{4(x - 3)}{12} = \frac{4x - 12}{12}

  2. Now the equation becomes: x124x1212=12\frac{x}{12} - \frac{4x - 12}{12} = \frac{1}{2}

  3. Combine the fractions on the left-hand side: x(4x12)12=12\frac{x - (4x - 12)}{12} = \frac{1}{2}

    Simplify the numerator: x4x+1212=3x+1212\frac{x - 4x + 12}{12} = \frac{-3x + 12}{12}

  4. Now the equation is: 3x+1212=12\frac{-3x + 12}{12} = \frac{1}{2}

  5. Cross-multiply to eliminate the denominators: 2(3x+12)=12×12(-3x + 12) = 12 \times 1 Simplifying both sides: 6x+24=12-6x + 24 = 12

  6. Solve for xx: 6x=1224-6x = 12 - 24 6x=12-6x = -12 x=126=2x = \frac{-12}{-6} = 2

Solution:

x=2x = 2

Would you like further details or have any questions?

Here are 5 related questions for practice:

  1. Solve: y5y42=13\frac{y}{5} - \frac{y - 4}{2} = \frac{1}{3}
  2. Solve: x8x54=23\frac{x}{8} - \frac{x - 5}{4} = \frac{2}{3}
  3. Solve: 2x7x13=12\frac{2x}{7} - \frac{x - 1}{3} = \frac{1}{2}
  4. Simplify: 5x104+3x+26\frac{5x - 10}{4} + \frac{3x + 2}{6}
  5. Solve: 4x+39=x223\frac{4x + 3}{9} = \frac{x}{2} - \frac{2}{3}

Tip: Always look for the least common denominator (LCD) to simplify fractions before solving equations.

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations
Fractions
Cross-Multiplication

Formulas

Finding a common denominator for fractions
Cross-multiplication to solve linear equations

Theorems

Equality of fractions
Distributive property

Suitable Grade Level

Grades 8-10