Christie decided to make bracelets for the fifth-grade girls. 2/5 of the bracelets were finished on Monday, and 3/7 of the bracelets were finished on Tuesday. What part of the total number of the bracelet are finished?
2/5 + 3/7 = 14/35 + 15/35 = ?
To find the total part of the bracelets that are finished, we need to find the common denominator between 5 and 7, as each fraction has a different denominator.
First, let's find the common denominator:
The least common multiple (LCM) of 5 and 7 is 35.
Now, let's convert the fractions to have a denominator of 35:
For the fraction 2/5:
Multiply the numerator and denominator by 7 (to get 35 as the denominator):
(2 * 7) / (5 * 7) = 14/35
For the fraction 3/7:
Multiply the numerator and denominator by 5 (to get 35 as the denominator):
(3 * 5) / (7 * 5) = 15/35
Now, we can find the part of the total number of bracelets that are finished by adding the two fractions:
14/35 + 15/35 = 29/35
Therefore, 29 out of 35 parts of the total number of bracelets are finished.