15/21 added to 90/3 in Fraction Form

The result of 15/21 added to 90/3 is: 30 5/7

Step-by-Step Solution

Step 1: Understand the Problem

We need to add the fractions $\frac{1}{5} 21$ and $\frac{9}{0} 3$ .

Step 2: Find the Least Common Multiple (LCM)

To add fractions, we need a common denominator. The LCM of 21 and 3 is 21.

Step 3: Convert Fractions to Equivalent Fractions

Convert $\frac{1}{5} 21$ to $\frac{15}{2} 1$
Convert $\frac{9}{0} 3$ to $\frac{630}{2} 1$

Step 4: Add the Numerators

Add the numerators: 15 + 630 = 645

Step 5: Simplify the Fraction

We can simplify $\frac{6}{4} 521$ to its lowest form.
The greatest common divisor (GCD) of 645 and 21 is 3.
Dividing both numerator and denominator by the GCD, we get $\frac{2}{1} 57$ .

Step 6: Convert to Mixed Number

The fraction $\frac{2}{1} 57$ can be written as the mixed number $30 \frac{5}{7}$ .

Final Answer

The result of 15/21 added to 90/3 is:

\frac{15}{21} + \frac{90}{3} = 30 \frac{5}{7}

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).

Fraction Calculator

Calculate operations between any two fractions: