Value

Determine the value of the following exspressions:

a) (23-25)·(4-5)
b) (97-123):(18+8)

Correct answer:

a =  2
b =  -1

Step-by-step explanation:

$a=(23-25)\cdot (4-5)=2$

$b=(97-123)\mathrm{/}(18+8)=-1$

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