Question

What should be added to -5/7 to get -2/3​

Answer 1

1/21

Explanation:

I think this is right, but don't quote me on this.

Answer 2

This is basic algebra

`(-5)/(7) + x =(-2)/(3) \\x=(-2)/(3) + (5)/(7) \\x = (-14 + 15)/(21) \\x = (1)/(21)`

Hope that answers your question

Explanation: