Question

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7. Simplify
-2/5+(-5/10)-(-4/7)​

Answer 1

Answer:

-23/70

Step-by-step explanation:

-2/5+-5/10-(-4/7)

-2/5+-5/10+4/7

LCM of 5,10,7=70

-2*14/5*14+-5*7/10*7+4*10/7*10=-28/70+-35/70+40/70

-28+-35+40/70=-23/70

Answer 2

-23/70 is the answer...

Explanation...in the attachment..