21/15 subtracted by 20/3 in Fraction Form

The result of 21/15 subtracted by 20/3 is: -6 11/15

Step-by-Step Solution

Step 1: Understand the Problem

We need to subtract the fraction $\frac{2}{0} 3$ from $\frac{2}{1} 15$ .

Step 2: Find the Least Common Multiple (LCM)

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

Step 3: Convert Fractions to Equivalent Fractions

Convert $\frac{2}{1} 15$ to $\frac{21}{1} 5$
Convert $\frac{2}{0} 3$ to $\frac{100}{1} 5$

Step 4: Subtract the Numerators

Subtract the numerators: 21 - 100 = -79

Step 5: Convert to Mixed Number

The fraction $\frac{-}{7} 915$ can be written as the mixed number $- 6 \frac{1}{1} 15$ .

Final Answer

The result of 21/15 subtracted by 20/3 is:

\frac{21}{15} - \frac{20}{3} = - 6 \frac{1}{1} 15

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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