Simplify: 19 + (-47).
A-28
B28
C-66
D66
Answer & Solution
Correct answer: A. -28
1. The two numbers 19 and -47 have different signs.
2. Subtract the smaller absolute value from the larger: 47 minus 19 equals 28.
3. Since -47 has the larger absolute value, the sum takes the negative sign, giving -28.
_Source: OpenStax Elementary Algebra (CC BY 4.0), Ch 1 "Foundations", section 1.3 Add and Subtract Integers_
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