21/42 added to 72/4 in Fraction Form

The result of 21/42 added to 72/4 is: 18 1/2

Step-by-Step Solution

Step 1: Understand the Problem

We need to add the fractions $\frac{2}{1} 42$ and $\frac{7}{2} 4$ .

Step 2: Find the Least Common Multiple (LCM)

To add fractions, we need a common denominator. The LCM of 42 and 4 is 84.

Step 3: Convert Fractions to Equivalent Fractions

Convert $\frac{2}{1} 42$ to $\frac{42}{8} 4$
Convert $\frac{7}{2} 4$ to $\frac{1512}{8} 4$

Step 4: Add the Numerators

Add the numerators: 42 + 1512 = 1554

Step 5: Simplify the Fraction

We can simplify $\frac{1}{5} 5484$ to its lowest form.
The greatest common divisor (GCD) of 1554 and 84 is 42.
Dividing both numerator and denominator by the GCD, we get $\frac{3}{7} 2$ .

Step 6: Convert to Mixed Number

The fraction $\frac{3}{7} 2$ can be written as the mixed number $18 \frac{1}{2}$ .

Final Answer

The result of 21/42 added to 72/4 is:

\frac{21}{42} + \frac{72}{4} = 18 \frac{1}{2}

Understanding Fraction Addition

How to Add Fractions

To add fractions, you need to ensure they have a common denominator. Then add 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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