Solve the Fraction Equation: Finding X in 8/3 - 4/5x = -2/10x

Question

Find the value of the parameter X

8345x=210x \frac{8}{3}-\frac{4}{5}x=-\frac{2}{10}x

Video Solution

Solution Steps

00:00 Solve
00:03 We want to isolate the unknown X
00:08 Let's arrange the equation so that one side has only the unknown X
00:29 Let's simplify what we can
00:34 Let's factorize 10 into factors 2 and 5
00:41 Let's simplify what we can
00:52 Let's group terms
00:56 Let's isolate the unknown X and calculate
01:00 Let's multiply by the reciprocal fraction to eliminate the fraction
01:14 Make sure to multiply numerator by numerator and denominator by denominator
01:18 Let's simplify what we can
01:21 And this is the solution to the question

Step-by-Step Solution

To solve the equation 8345x=210x \frac{8}{3} - \frac{4}{5}x = -\frac{2}{10}x , follow these steps:

  • Step 1: Identify the least common denominator (LCD) of the fractions involved. The denominators are 3, 5, and 10, so the LCD is 30.
  • Step 2: Multiply the entire equation by 30 to eliminate the fractions:
    30×(8345x)=30×(210x) 30 \times \left(\frac{8}{3} - \frac{4}{5}x\right) = 30 \times \left(-\frac{2}{10}x\right)
  • Step 3: Simplify each term:
    For 83\frac{8}{3}: 30×83=10×8=8030 \times \frac{8}{3} = 10 \times 8 = 80
    For 45x\frac{4}{5}x: 30×45x=6×4x=24x30 \times \frac{4}{5}x = 6 \times 4x = 24x
    For 210x-\frac{2}{10}x: 30×210x=3×2x=6x30 \times -\frac{2}{10}x = 3 \times -2x = -6x
  • Step 4: Rewrite the equation:
    8024x=6x 80 - 24x = -6x
  • Step 5: Combine like terms by moving terms containing x x to one side:
    Subtract 6x-6x from both sides:
    80=18x 80 = 18x
  • Step 6: Solve for x x by dividing both sides by 18:
    x=8018=409 x = \frac{80}{18} = \frac{40}{9} after simplification.

Therefore, the solution to the problem is x=409 x = \frac{40}{9} .

Answer

409 \frac{40}{9}