Adding, subtracting, multiplying fractions

Simplify this fraction:

• 2

• can't simplify

• 3

• 2/3

Simplify this fraction:

• 3

• 4/8

• 4

• can't simplify

Simplify this fraction:

• 9

• can't simplify

• 4

• 3

Simplify this fraction:

• 2

• 5

• 15

• Can't simplify

• 3/4

• can't combine

• 3/8

• 1/4

• can't combine

• 7/5

• 7/10

• 1/5

• 3/2

• 7/2

• can't combine

• 3/4

• can't combine

• 3/10

• 11/10

• 3/0

• -1/4

• -5/4

• 1/4

• -1/8

combine but don't simplify

• -4/6

• -4/12

• -2/6

• 2/6