Respuesta :

bellaxysun

Answer:

4/10 or 2/5

Step-by-step explanation:

9/10-1/2 = 9/10-5/10 = 4/10 = 2/5

nevaehwilsonhuerta

Answer:

2/5

Step-by-step explanation:

9/10-1/2

9/10-1×5/2×5

9/10-5/10

9-5/10

4/10

2/5