1 4 C–3 1 2 C+3= – 3 4 C

3 min read Jun 17, 2024
1 4 C–3 1 2 C+3= – 3 4 C

Solving the Equation: 1 4/c - 3 1/2c + 3 = -3 4/c

This equation involves fractions and variables, making it a bit more challenging to solve. Here's a step-by-step guide to find the solution:

1. Convert Mixed Numbers to Improper Fractions

  • 1 4/c: This becomes (1*c + 4)/c = (c+4)/c
  • 3 1/2c: This becomes (3*2c + 1)/2 = (6c+1)/2
  • -3 4/c: This becomes (-3*c - 4)/c = (-3c-4)/c

2. Rewrite the Equation with Improper Fractions

The equation now looks like this: (c+4)/c - (6c+1)/2 + 3 = (-3c-4)/c

3. Find a Common Denominator

To combine the terms, we need a common denominator. The least common denominator for c, 2, and c is 2c.

  • (c+4)/c: Multiply numerator and denominator by 2: 2(c+4)/(2c) = (2c+8)/(2c)
  • (6c+1)/2: Multiply numerator and denominator by c: c(6c+1)/(2c) = (6c^2+c)/(2c)
  • 3: Multiply numerator and denominator by 2c: 3(2c)/(2c) = (6c)/(2c)

4. Combine Terms

Now the equation looks like this: (2c+8)/(2c) - (6c^2+c)/(2c) + (6c)/(2c) = (-3c-4)/c

Since the denominators are all the same, we can combine the numerators: (2c + 8 - 6c^2 - c + 6c) / (2c) = (-3c - 4)/c

Simplify the numerator: (-6c^2 + 7c + 8) / (2c) = (-3c - 4)/c

5. Multiply Both Sides by the Denominator

To eliminate the fractions, multiply both sides of the equation by 2c: -6c^2 + 7c + 8 = -6c - 8

6. Move All Terms to One Side

Add 6c and 8 to both sides to set the equation to zero: -6c^2 + 13c + 16 = 0

7. Solve the Quadratic Equation

This quadratic equation can be solved using the quadratic formula: c = (-b ± √(b^2 - 4ac)) / (2a)

Where:

  • a = -6
  • b = 13
  • c = 16

Substitute these values into the quadratic formula and solve for c. You will get two possible solutions for c.

Important Note: Always check your solutions by plugging them back into the original equation to make sure they are valid.

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