5/7 + (-4/5)
= 5/7 - 4/5
= (25 -28)/25
= - 3/35
----) 5/4 + (-5/7)
-----) 5/4 — 5/7
------) 35 – 20 /28
------) 15 /28
15 /28 is answer
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Answer
5/7 + (-4/5)
= 5/7 - 4/5
= (25 -28)/25
= - 3/35
----) 5/4 + (-5/7)
-----) 5/4 — 5/7
------) 35 – 20 /28
------) 15 /28
15 /28 is answer