Solve the Fraction Equation: Find X in 1/4 + 2/5x = -3/4 + 1/10x

Question

Solve for X:

14+25x=34+110x \frac{1}{4}+\frac{2}{5}x=-\frac{3}{4}+\frac{1}{10}x

Video Solution

Solution Steps

00:00 Find X
00:03 Arrange the equation so that one side has only the unknown X
00:28 Multiply by denominators to find the common denominator
00:43 Collect like terms
00:55 Multiply by the reciprocal to isolate X
01:01 And this is the solution to the question

Step-by-Step Solution

To solve this equation, we will perform the following steps:

  • Step 1: Move terms involving x x to one side of the equation. Subtract 110x\frac{1}{10}x from both sides:
  • 25x110x=3414\frac{2}{5}x - \frac{1}{10}x = -\frac{3}{4} - \frac{1}{4}
  • Step 2: Simplify the equation:
  • First, simplify the right-hand side:

    3414=44=1-\frac{3}{4} - \frac{1}{4} = -\frac{4}{4} = -1
  • Step 3: Align terms with x x . Find a common denominator for the fractions on the left side:
  • The common denominator for 25x\frac{2}{5}x and 110x\frac{1}{10}x is 10.

    410x110x=310x\frac{4}{10}x - \frac{1}{10}x = \frac{3}{10}x
  • Step 4: Set up the simplified equation:
  • 310x=1\frac{3}{10}x = -1
  • Step 5: Solve for x x by multiplying both sides by the reciprocal of the fraction's coefficient:
  • x=1×103=103x = -1 \times \frac{10}{3} = -\frac{10}{3}
  • Step 6: Final answer check verifies against the multiple-choice option.

Therefore, the solution to the equation is x=103 x = -\frac{10}{3} .

Answer

103 -\frac{10}{3}