Solve Mixed Number Subtraction: 3⅓ - 2⅕ Step by Step

Question

31321415= 3\frac{1}{3}-2\frac{14}{15}=

Video Solution

Step-by-Step Solution

To solve this problem, follow these steps:

  • Step 1: Convert each mixed number to an improper fraction.
  • Step 2: Find a common denominator for the fractions.
  • Step 3: Subtract the fractions.
  • Step 4: Simplify the result if needed.

Let's begin with Step 1:
Convert 3133\frac{1}{3} to an improper fraction:
313=3×3+13=1033\frac{1}{3} = \frac{3 \times 3 + 1}{3} = \frac{10}{3}
Convert 214152\frac{14}{15} to an improper fraction:
21415=2×15+1415=44152\frac{14}{15} = \frac{2 \times 15 + 14}{15} = \frac{44}{15}

Step 2: Find a common denominator for 103\frac{10}{3} and 4415\frac{44}{15}.
The least common multiple of 3 and 15 is 15, so we'll use 15 as the common denominator.

Step 3: Convert 103\frac{10}{3} to have the denominator of 15:
103=10×53×5=5015\frac{10}{3} = \frac{10 \times 5}{3 \times 5} = \frac{50}{15}

Now, perform the subtraction:
50154415=504415=615\frac{50}{15} - \frac{44}{15} = \frac{50 - 44}{15} = \frac{6}{15}

Step 4: Simplify 615\frac{6}{15}.
The greatest common divisor of 6 and 15 is 3, so divide the numerator and denominator by 3:
615=6÷315÷3=25\frac{6}{15} = \frac{6 \div 3}{15 \div 3} = \frac{2}{5}

Thus, the final answer is 25\frac{2}{5}.

Answer

25 \frac{2}{5}