• Home
  • Chemistry
  • Astronomy
  • Energy
  • Nature
  • Biology
  • Physics
  • Electronics
  • Adding Fractions: A Comprehensive Guide with Step-by-Step Instructions
    Adding Fractions: A Step-by-Step Process

    Sometimes you need to add two or more fractions. Adding or subtracting fractions with like denominators is a simple process. Adding fractions with different denominators is a bit more involved, but it's still not too difficult. Here are the steps to do each.

    To Add Fractions with Like Denominators:

    1. Start by adding the numerators, keeping the denominator the same. For example, to add 2/5 and 3/5, we would add the numerators 2 and 3 to get 5. The denominator stays the same, so the answer is 5/5.

    2. If necessary, simplify the fraction by dividing both the numerator and the denominator by a common factor. If you can't divide both numbers by a common factor, the fraction is already in its simplest form. For example, the fraction 5/5 can be simplified by dividing both numbers by 5, giving us the answer 1/1.

    To Add Fractions with Unlike Denominators:

    1. Find the least common multiple (LCM) of the denominators. This is the smallest number that all of the denominators can divide into evenly. For example, the LCM of 3, 4, and 6 is 12.

    2. Once you have the LCM, multiply each fraction so that its denominator is equal to the LCM. For example, to add 1/3 and 1/4, we would multiply 1/3 by 4/4 (since 4 is a factor of 12) and 1/4 by 3/3 (since 3 is a factor of 12). This gives us 4/12 and 3/12.

    3. Add the numerators of the fractions, keeping the denominator the same. In our example, 4/12 + 3/12 = 7/12.

    4. If necessary, simplify the fraction by dividing both the numerator and the denominator by a common factor. In our example, 7/12 cannot be simplified any further, so our final answer is 7/12.

    Here Are Some Examples of Adding Fractions:

    - 1/2 + 1/4 = LCM of 2 and 4 is 4, so first multiply 1/2 by 2/2 and then

    multiply 1/4 by 1/1.

    This gives you 2/4 + 1/4 = 3/4

    - 3/5 + 2/7 = LCM is 35. So, multiply the first fraction by 7/7 and the

    second by 5/5. This gives you 21/35 + 10/35 = 31/35

    - 1/3 + 2/5 + 1/6 = This problem requires adding three fractions with different denominators. Find the least common multiple of the three denominators, which in this case is 30, and convert each fraction to an equivalent fraction with a denominator of 30.

    This makes the problem:

    10/30 + 12/30 + 5/30 = 27/30.

    - 5/6 + 1/4 + 3/8 = The least common multiple of 6, 4, and 8 is 24. So,

    5/6 (24/6 = 4/1) = 20/24

    1/4 (6/4 = 3/2) = 6/24

    3/8(3/3 = 1) = 9/24

    20/24 + 6/24 + 9/24 = 35/24. This fraction can be simplified by extracting a 7 from the numerator and denominator, which results in 35/24 = 7/4 or 1 3/4.

    Science Discoveries © www.scienceaq.com