5
2

−
1
2
= ?

So,
5
2

−
1
2

=
5 − 1
2

=
4
2
= 2

7
3

−
3
6
= ?

So,
7
3

−
3
6

=
7 × 2
3 × 2

−
3
6

=
14
6

−
3
6

=
11
6

3
5

−
2
4
= ?

So,
3
5

−
2
4

=
3 × 4
5 × 4

−
2 × 5
4 × 5

=
12
20

−
10
20

=
2
20

5
2

−
1
2
= ?

So,
5
2

−
1
2

=
5 − 1
2

=
4
2
= 2

7
3

−
3
6
= ?

So,
7
3

−
3
6

=
7 × 2
3 × 2

−
3
6

=
14
6

−
3
6

=
11
6

3
5

−
2
4
= ?

So,
3
5

−
2
4

=
3 × 4
5 × 4

−
2 × 5
4 × 5

=
12
20

−
10
20

=
2
20

New math lessons
Your email is safe with us. We will only use it to inform you about new math lessons.
Jan 13, 17 01:28 PM
What is the harmonic mean? How to calculate the harmonic mean?