20/5 subtracted by 21/3 in Fraction Form

The result of 20/5 subtracted by 21/3 is: -3

Step-by-Step Solution

Step 1: Understand the Problem

We need to subtract the fraction $\frac{2}{1} 3$ from $\frac{2}{0} 5$ .

Step 2: Find the Least Common Multiple (LCM)

To subtract fractions, we need a common denominator. The LCM of 5 and 3 is 15.

Step 3: Convert Fractions to Equivalent Fractions

Convert $\frac{2}{0} 5$ to $\frac{60}{1} 5$
Convert $\frac{2}{1} 3$ to $\frac{105}{1} 5$

Step 4: Subtract the Numerators

Subtract the numerators: 60 - 105 = -45

Step 5: Simplify the Fraction

We can simplify $\frac{-}{4} 515$ to its lowest form.
The greatest common divisor (GCD) of -45 and 15 is 15.
Dividing both numerator and denominator by the GCD, we get $\frac{-}{3} 1$ .

Final Answer

The result of 20/5 subtracted by 21/3 is:

\frac{20}{5} - \frac{21}{3} = - 3

Understanding Fraction Subtraction

How to Subtract Fractions

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

$\frac{a}{b} - \frac{c}{d} = \frac{a d - b c}{b d}$ (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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