Computer11idn
Answered

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Can you take away 1 from 19 and have 20 left? Show how.

Sagot :

I can think of it this way, without changing the sign of 1, and the operation (subtraction).

Subtract the opposite of the absolute value of 1 from 19.
Opposite of the absolute value of 1 = - I 1 I

Equation:
19 - (- I 1 I) = 20
19 - (- 1) = 20
19 + 1 = 20  (When subtracting integers, change the sign of the 
                    subtrahend, then proceed to addition rule.)
20 = 20