Question

show a-(-b)=a+b,a=20,b=19​

Answer 1

Answer:

Given a-(-b)

We know  that - and - when multiplied gives +

thus,  a - (-b) = a + b

now given a=20 and b=19

therefore, a + b=20+19=39.

Step-by-step explanation:

Answer 2

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