Simplify.

3/5+(−1/4)7/10

enter your answer, in simplest form, in the boxes.
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The answer will be:  

Step-by-step explanation:

The given expression is:  

First we need to multiply and . So, we will get.......

Now, we need to make both denominators equal. So.........

So, the answer will be:  

i would have to say it is c.