Find the total thickness of 2 pieces of wood glued together. One piece is 5/7 inches thick and the other piece is 3/4 inches thick.

1 3 / 16 in

Explanation:

We cannot add fractions with different denominators, so we must convert them to fractions with equivalent denominators. To do that, multiply the fraction by a form of

1

(

x

x

):

7

8

⋅

2

2

=

14

16

Now, all we need to do is add the numerators of the fractions and convert to a mixed number:

14

16

+

5

16

=

19

16

=

1

3

16