Balance the Fraction Equation: Solve for X in -1/7 + 3/4x = 1/8x + 3/14

Question

Solve for X:

17+34x=18x+314 -\frac{1}{7}+\frac{3}{4}x=\frac{1}{8}x+\frac{3}{14}

Video Solution

Solution Steps

00:00 Find X
00:03 Arrange the equation so that one side has only the unknown X
00:31 Multiply by denominators to find the common denominator
00:45 Collect like terms
00:52 Multiply by the reciprocal to isolate X
01:01 Simplify as much as possible
01:07 And this is the solution to the problem

Step-by-Step Solution

To solve the equation 17+34x=18x+314-\frac{1}{7} + \frac{3}{4}x = \frac{1}{8}x + \frac{3}{14}, we complete the following steps:

Step 1: Isolate the terms involving x x on one side of the equation and the constant terms on the other side.

Start by subtracting 18x\frac{1}{8}x from both sides:

17+34x18x=314-\frac{1}{7} + \frac{3}{4}x - \frac{1}{8}x = \frac{3}{14}

Step 2: Move the constant term 17-\frac{1}{7} to the other side:

34x18x=314+17\frac{3}{4}x - \frac{1}{8}x = \frac{3}{14} + \frac{1}{7}

Step 3: Find a common denominator for combining like terms.

For the left side, convert the fractions with denominators 4 and 8 to a common denominator of 8:

34x=68x\frac{3}{4}x = \frac{6}{8}x

So, 68x18x=58x\frac{6}{8}x - \frac{1}{8}x = \frac{5}{8}x

Now consider the right side by converting the fractions with denominators 14 and 7 to a common denominator of 14:

17=214\frac{1}{7} = \frac{2}{14}

Therefore, 314+214=514\frac{3}{14} + \frac{2}{14} = \frac{5}{14}

Step 4: Equate the simplified terms:

58x=514\frac{5}{8}x = \frac{5}{14}

Step 5: Solve for x x by isolating it using multiplication:

Multiply both sides by 85\frac{8}{5} to clear the fractional coefficient of x x :

x=514×85x = \frac{5}{14} \times \frac{8}{5}

Simplify this expression:

x=5×814×5=814x = \frac{5 \times 8}{14 \times 5} = \frac{8}{14}

Therefore, the solution to the equation is x=814 x = \frac{8}{14} .

Answer

814 \frac{8}{14}