Respuesta :

Answer:

7 9/10

Step-by-step explanation:

18 2/5 - 10 1/2 = 7.9/10

dumpIing

Answer:

[tex]7\frac{9}{10}[/tex]

Step-by-step explanation:

Find the greatest common denominator. It's 10 in this case.

[tex]18\frac{2}{5}-10\frac{1}{2}=18\frac{4}{10}-10\frac{5}{10}=7\frac{9}{10}[/tex]