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Question
`27- {13 + 4 - (8 + 4 - bar(1 + 3))}`
Sum
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Solution
`27- {13 + 4 - (8 + 4 - bar(1 + 3))}`
The overline indicates grouping: `bar(1+3) = 1+3=4`
27 − {13 + 4 − (8 + 4 − 4)}
8 + 4 − 4 = 8
Substitute: 27 − {13 + 4 − 8}
13 + 4 − 8 = 9
Substitute: 27 − 9
27 − 9
= 18
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Properties of Operations on Integers
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