Solving the Fraction Equation: Uncover X in 2/5x = 40

Question

Solve for X:

25x=40 \frac{2}{5}x=40

Video Solution

Solution Steps

00:00 Solve
00:03 We want to isolate the unknown X
00:07 We'll multiply by the reciprocal fraction to eliminate the fraction
00:12 We'll reduce what we can
00:24 We'll factor 40 into 20 and 2
00:29 We'll reduce what we can
00:36 And this is the solution to the question

Step-by-Step Solution

To solve the equation 25x=40\frac{2}{5}x = 40, follow these steps:

  • Step 1: Identify the reciprocal of the fraction 25\frac{2}{5}, which is 52\frac{5}{2}.
  • Step 2: Multiply both sides of the equation by 52\frac{5}{2} to isolate xx.
  • Step 3: Simplify the equation to find the value of xx.

Let's perform the calculation:


Step 1: Multiply both sides by the reciprocal:
52×25x=52×40\frac{5}{2} \times \frac{2}{5}x = \frac{5}{2} \times 40.


The left side simplifies to:
x=52×40x = \frac{5}{2} \times 40.

Step 2: Calculate the right side:
x=200÷2=100x = 200 \div 2 = 100.

Therefore, the solution to the equation 25x=40\frac{2}{5}x = 40 is x=100 x = 100 .

Answer

100 100