Question

what must be subtracted from -1 to get -19​

Answer 1

Answer:

Let the no. be x, so that

-1 - x = -19

or, - x = -19 + 1

or, - x = - 18

or, x = 18.

To check:-

-1 - 18 = -19

or, -19 = -19

LHS = RHS

Hence, Verified.

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Answer 2

-1-18=-19

Subtract 18 from -1 to get answer -19