subtract.

-2/5 - 7/10=

I got the answer of 5/10 = 1/2
is this correct?

no. You are not changing fractions...

-2/5=-4/10

-4/10 -7/10=?

http://www.mathsisfun.com/fractions_addition.html

-3/10 or just 3/10 ok that is what I am not doing correctly I am not changing the fraction nor changing to common denominators... ok thank you

it is -11/10. Why? Think on that.

You are not changing fractions to have common denominators. See the link I gave you.

To subtract fractions, you need to have a common denominator. In this case, the common denominator is 10.

Let's go step by step:

- Convert -2/5 to a fraction with a denominator of 10. Multiply the numerator and denominator of -2/5 by 2, giving you -4/10.
- Now, you can subtract -4/10 from 7/10. Subtract the numerators and keep the denominator the same, giving you 7 - (-4) = 7 + 4 = 11.
- The final answer is 11/10.

So, the correct answer is 11/10, not 1/2.