20/124 subtracted by 81/2 in Fraction Form

The result of 20/124 subtracted by 81/2 is: -41 41/62

Step-by-Step Solution

Step 1: Understand the Problem

We need to subtract the fraction \(\frac812\) from \(\frac20124\).

Step 2: Find the Least Common Multiple (LCM)

To subtract fractions, we need a common denominator. The LCM of 124 and 2 is 124.

Step 3: Convert Fractions to Equivalent Fractions

Convert \(\frac20124\) to \(\frac{20}124\)
Convert \(\frac812\) to \(\frac{5022}124\)

Step 4: Subtract the Numerators

Subtract the numerators: 20 - 5022 = -5002

Step 5: Simplify the Fraction

We can simplify \(\frac-5002124\) to its lowest form.
The greatest common divisor (GCD) of -5002 and 124 is 2.
Dividing both numerator and denominator by the GCD, we get \(\frac-250162\).

Step 6: Convert to Mixed Number

The fraction \(\frac-250162\) can be written as the mixed number \(-41\frac4162\).

Final Answer

The result of 20/124 subtracted by 81/2 is:

\[ \frac{20}{124} - \frac{81}{2} = -41\frac4162 \]

Understanding Fraction Subtraction

How to Subtract Fractions

To subtract fractions, you need to ensure they have a common denominator. Then subtract the numerators:

\( \frac{a}{b} - \frac{c}{d} = \frac{ad - bc}{bd} \) (when denominators are different)

Or simply \( \frac{a}{b} - \frac{c}{b} = \frac{a - c}{b} \) (when denominators are the same)

Why Simplify Fractions?

Simplifying fractions makes them easier to work with and understand. A fraction is in its simplest form when the numerator and denominator have no common factors other than 1.

To simplify a fraction, divide both the numerator and denominator by their greatest common divisor (GCD).

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