Solve the Fraction Equation: Finding X in 1/8 - 4/16 + 15/16x = 3/4x - 2/8x + 3/8

Question

Solve for X:


18416+1516x=34x28x+38 \frac{1}{8}-\frac{4}{16}+\frac{15}{16}x=\frac{3}{4}x-\frac{2}{8}x+\frac{3}{8}

Video Solution

Solution Steps

00:00 Find X
00:05 Multiply by the common denominator
00:50 Solve each multiplication separately
01:02 Collect terms
01:07 Arrange the equation so that only X is on one side
01:31 Isolate X
01:39 And this is the solution to the problem

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Simplify both sides of the equation by combining like terms.
  • Step 2: Solve for x x .

Now, let's work through each step:

Step 1: Simplify the left-hand side:
18416+1516x=1814+1516x \frac{1}{8} - \frac{4}{16} + \frac{15}{16}x = \frac{1}{8} - \frac{1}{4} + \frac{15}{16}x .
Convert 14\frac{1}{4} to 28\frac{2}{8}, the same denominator with 18\frac{1}{8}:
1828+1516x=18+1516x \frac{1}{8} - \frac{2}{8} + \frac{15}{16}x = -\frac{1}{8} + \frac{15}{16}x .

Simplify the right-hand side:
34x28x+38=34x14x+38 \frac{3}{4}x - \frac{2}{8}x + \frac{3}{8} = \frac{3}{4}x - \frac{1}{4}x + \frac{3}{8} .
Convert both terms with x x to a common denominator (i.e., 4/4 of x x terms):
24x+38=12x+38 \frac{2}{4}x + \frac{3}{8} = \frac{1}{2}x + \frac{3}{8} .

Step 2: Equate the simplified expressions:
18+1516x=12x+38 -\frac{1}{8} + \frac{15}{16}x = \frac{1}{2}x + \frac{3}{8} .

Subtract 12x\frac{1}{2}x from both sides:
18+1516x12x=38-\frac{1}{8} + \frac{15}{16}x - \frac{1}{2}x = \frac{3}{8} .
Convert 12x\frac{1}{2}x to 816x\frac{8}{16}x and 1516x816x=716x\frac{15}{16}x - \frac{8}{16}x = \frac{7}{16}x .
18+716x=38-\frac{1}{8} + \frac{7}{16}x = \frac{3}{8} .

Add 18\frac{1}{8} to both sides:
716x=38+18=48=12\frac{7}{16}x = \frac{3}{8} + \frac{1}{8} = \frac{4}{8} = \frac{1}{2} .

Solve for x x by multiplying both sides by the reciprocal of 716\frac{7}{16}:
x=1/2×167=1614=87 x = \frac{1/2 \times 16}{7} = \frac{16}{14} = \frac{8}{7} .
Checking the choice that matches, the solution is 1614 \frac{16}{14} .

Therefore, the solution to the problem is x=1614 x = \frac{16}{14} .

Answer

1614 \frac{16}{14}