Solve the Fraction Subtraction: 4/5 minus 6/10

Question

Solve the following exercise:

45610=? \frac{4}{5}-\frac{6}{10}=\text{?}

Video Solution

Solution Steps

00:05 Let's solve this problem together.
00:09 First, multiply by two to find the common denominator.
00:13 Remember, multiply both the numerator and the denominator.
00:20 Now, calculate the products carefully.
00:27 Subtract using the common denominator you found.
00:31 Then, calculate what the new numerator is.
00:36 Let's reduce the fraction as much as possible.
00:40 Don't forget to divide both the numerator and the denominator.
00:44 And now, this is how we arrive at the solution!

Step-by-Step Solution

To solve the problem of subtracting the fraction 610 \frac{6}{10} from 45 \frac{4}{5} , follow these steps:

Step 1: Identify the least common multiple (LCM) of the denominators 5 and 10.
The LCM of 5 and 10 is 10.

Step 2: Convert each fraction to an equivalent fraction with the common denominator of 10.
- The fraction 45 \frac{4}{5} can be converted to have a denominator of 10 by multiplying both the numerator and the denominator by 2. Thus, 45=4×25×2=810 \frac{4}{5} = \frac{4 \times 2}{5 \times 2} = \frac{8}{10} .
- The fraction 610 \frac{6}{10} already has the denominator of 10, so it remains 610 \frac{6}{10} .

Step 3: Subtract the second fraction from the first.
Subtract the numerators while keeping the common denominator: 810610=8610=210 \frac{8}{10} - \frac{6}{10} = \frac{8 - 6}{10} = \frac{2}{10} .

Step 4: Simplify the resulting fraction.
The fraction 210 \frac{2}{10} can be simplified by dividing both the numerator and the denominator by their greatest common divisor, which is 2: 210=2÷210÷2=15 \frac{2}{10} = \frac{2 \div 2}{10 \div 2} = \frac{1}{5} .

Therefore, the solution to the problem is 15 \frac{1}{5} , which corresponds to choice number 2.

Answer

15 \frac{1}{5}