1.

Please help with this​

Answer»

Step-by-step explanation:

Let x be the number.

-4/15 + 7/10 + x = 1

-8/30 + 21/30 + x = 1

13/30 + x = 1

x = 1 - 13/30

x = 17/30

Therefore 17/30 should be ADDED to (-4/15 + 7/10) to GET 1.



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