Master the Equation: Solve 1/8X + 3 = -1/5 + 5/16X

Question

Solve for X:

18x+3=15+516x \frac{1}{8}x+3=-\frac{1}{5}+\frac{5}{16}x

Video Solution

Solution Steps

00:07 Let's start by finding X.
00:11 First, arrange the equation so that X is all by itself on one side.
00:31 Next, find a common denominator, and multiply each term accordingly.
00:44 Now, collect the like terms together.
00:58 Then, multiply by the reciprocal to get X alone.
01:07 Be sure to multiply the numerators with the numerators and the denominators with the denominators.
01:14 And that's the solution to our problem!

Step-by-Step Solution

To solve the equation 18x+3=15+516x \frac{1}{8}x + 3 = -\frac{1}{5} + \frac{5}{16}x , we will perform the following steps:

  • Step 1: Clear the fractions
    First, find the least common multiple (LCM) of the denominators 8, 5, and 16. The LCM is 80.
  • Step 2: Eliminate the fractions
    Multiply every term in the equation by 80:
  • 80×18x+80×3=80×(15)+80×516x 80 \times \frac{1}{8}x + 80 \times 3 = 80 \times \left(-\frac{1}{5}\right) + 80 \times \frac{5}{16}x
  • Simplifying, we get:
  • 10x+240=16+25x 10x + 240 = -16 + 25x
  • Step 3: Rearrange and combine like terms
    Subtract 10x 10x from both sides to get the x x terms on one side:
  • 240=16+25x10x 240 = -16 + 25x - 10x
  • Further simplifying, we have:
  • 240=16+15x 240 = -16 + 15x
  • Add 16 to both sides to isolate terms with x x :
  • 240+16=15x 240 + 16 = 15x 256=15x 256 = 15x
  • Step 4: Solve for x x
    Divide both sides by 15:
  • x=25615 x = \frac{256}{15}

Therefore, the solution to the equation is x=25615 x = \frac{256}{15} . The correct choice corresponding to this answer is choice 2.

Answer

25615 \frac{256}{15}