Solve the Fraction Subtraction: 3/4 - 3/9 Step by Step

Question

Solve the following exercise:

3439=? \frac{3}{4}-\frac{3}{9}=\text{?}

Video Solution

Step-by-Step Solution

To solve this problem, we'll follow these steps:

  • Step 1: Find a common denominator for the fractions 34 \frac{3}{4} and 39 \frac{3}{9} .
  • Step 2: Convert each fraction to have this common denominator.
  • Step 3: Subtract the numerators while keeping the common denominator.
  • Step 4: Simplify the resultant fraction if possible.

Now, let's work through each step:

Step 1: The denominators of the fractions are 4 and 9. The least common multiple of 4 and 9 is 36. Therefore, 36 will be our common denominator.

Step 2: Convert 34 \frac{3}{4} and 39 \frac{3}{9} to have a denominator of 36:

34×99=2736 \frac{3}{4} \times \frac{9}{9} = \frac{27}{36} and 39×44=1236 \frac{3}{9} \times \frac{4}{4} = \frac{12}{36}

Step 3: Now, subtract the fractions:

27361236=1536 \frac{27}{36} - \frac{12}{36} = \frac{15}{36}

Step 4: Simplify 1536 \frac{15}{36} :

Both 15 and 36 can be divided by their greatest common divisor, which is 3. Dividing both the numerator and denominator by 3, we get:

15÷336÷3=512 \frac{15 \div 3}{36 \div 3} = \frac{5}{12}

Therefore, the solution to the problem is 512 \frac{5}{12} .

Answer

512 \frac{5}{12}