Solve the Fraction Equation with Negative Fractions: Finding X in -1/5(x-1/3)+1/15=-3/5x+1/10

Question

Solve for X:

15(x13)+115=35x+110 -\frac{1}{5}(x-\frac{1}{3})+\frac{1}{15}=-\frac{3}{5}x+\frac{1}{10}

Video Solution

Solution Steps

00:00 Find X
00:04 Open brackets properly, multiply by each factor
00:20 Collect terms
00:30 Arrange the equation so that X is isolated on one side
01:01 Collect terms
01:09 Find the common denominator and multiply accordingly
01:29 Isolate X
01:38 And this is the solution to the question

Step-by-Step Solution

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

  • Step 1: Distribute 15-\frac{1}{5} across (x13)(x-\frac{1}{3}).
  • Step 2: Clear fractions by multiplying through by the least common multiple (LCM) of the denominators.
  • Step 3: Simplify and combine like terms to isolate x x .

Let's work through each step:

Step 1: Distribute 15-\frac{1}{5} across (x13)(x-\frac{1}{3}).
15(x13)=15x+115-\frac{1}{5}(x-\frac{1}{3}) = -\frac{1}{5}x + \frac{1}{15}.

The equation now is:
15x+115+115=35x+110-\frac{1}{5}x + \frac{1}{15} + \frac{1}{15} = -\frac{3}{5}x + \frac{1}{10}.

Simplify the left side:
15x+215=35x+110-\frac{1}{5}x + \frac{2}{15} = -\frac{3}{5}x + \frac{1}{10}.

Step 2: Multiply through by 30, which is the LCM of 5, 15, and 10, to clear fractions.
30(15x)+30(215)=30(35x)+30(110)30(-\frac{1}{5}x) + 30(\frac{2}{15}) = 30(-\frac{3}{5}x) + 30(\frac{1}{10}).

This gives us:
6x+4=18x+3-6x + 4 = -18x + 3.

Step 3: Solve for x x .
Add 18x 18x to both sides to get:
12x+4=312x + 4 = 3.

Subtract 4 from both sides:
12x=112x = -1.

Divide both sides by 12:
x=112x = -\frac{1}{12}.

Therefore, the solution to the problem is x=112 x = -\frac{1}{12} .

Answer

112 -\frac{1}{12}