Ok so I totally forgot how to find a common denominator when your adding fractions, could someone please tell me the steps to do that? :)
multiply.
Multiply the denominators together and this gives the new denominator.
Divide each denominator into the new dominator and multiply by the numerator.
3/7+5/8
new denominator is 7*8 = 56
so addition is now
(3*8)+(5*7)
___________
7*8
To find the common denominator when adding fractions, follow these steps:
1. Identify the denominators of the fractions you want to add.
2. Multiply the denominators together. This will give you the common denominator.
3. Divide the common denominator by each original denominator individually, and then multiply the result by the corresponding numerator.
4. Write the new numerators over the common denominator.
5. Add the numerators together.
6. Keep the common denominator as the denominator of the resulting fraction.
Let's use an example to illustrate these steps:
Suppose we want to add 3/7 and 5/8.
1. The denominators are 7 and 8.
2. Multiply the denominators: 7 * 8 = 56.
3. Calculate the new numerators:
a. Divide 56 by 7: 56 ÷ 7 = 8.
Multiply 8 by the numerator 3: 8 * 3 = 24.
b. Divide 56 by 8: 56 ÷ 8 = 7.
Multiply 7 by the numerator 5: 7 * 5 = 35.
4. Write the new numerators over the common denominator:
3/7 + 5/8 becomes 24/56 + 35/56.
5. Add the numerators together: 24 + 35 = 59.
6. Keep the common denominator (56) as the denominator of the resulting fraction.
Therefore, the sum of 3/7 and 5/8 is 59/56.