What is 9/10-2/5 simplified?

9/10-2/5

You first make the bottom number the same, so make them both 10.

9/10 is already n/10

2/5 is times by 2 to get n/10

2/5=4/10

Now you just do 9/10-4/10=5/10

Simplify 5/10 by dividing both sides by 5 gives 1/2 or 0.5 or a half

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