21/7 subtracted by 38/2 in Fraction Form

The result of 21/7 subtracted by 38/2 is: -16

Step-by-Step Solution

Step 1: Understand the Problem

We need to subtract the fraction $\frac{3}{8} 2$ from $\frac{2}{1} 7$ .

Step 2: Find the Least Common Multiple (LCM)

To subtract fractions, we need a common denominator. The LCM of 7 and 2 is 14.

Step 3: Convert Fractions to Equivalent Fractions

Convert $\frac{2}{1} 7$ to $\frac{42}{1} 4$
Convert $\frac{3}{8} 2$ to $\frac{266}{1} 4$

Step 4: Subtract the Numerators

Subtract the numerators: 42 - 266 = -224

Step 5: Simplify the Fraction

We can simplify $\frac{-}{2} 2414$ to its lowest form.
The greatest common divisor (GCD) of -224 and 14 is 14.
Dividing both numerator and denominator by the GCD, we get $\frac{-}{1} 61$ .

Final Answer

The result of 21/7 subtracted by 38/2 is:

\frac{21}{7} - \frac{38}{2} = - 16

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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