Question

add the integers without a calculator.
$12 + (-1)$
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add the integers without a calculator.
$-25 + 16$
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Explanation:

Step1: Rewrite as subtraction

$12 + (-1) = 12 - 1$

Step2: Calculate the result

$12 - 1 = 11$

Step3: Rewrite as subtraction

$-25 + 16 = 16 - 25$

Step4: Calculate the result

$16 - 25 = -9$

Answer:

1. $11$
2. $-9$