volume_mute

Grouping Symbols – Self Check 5

publish date: 2026/05/07 22:17:46.738656 UTC

volume_mute

Evaluate: \(-18 + 6(-7 + 9 \cdot 2)\)

Correct Answer

\(48\)

Explanation

  1. Inside parentheses — multiply: \(9 \cdot 2 = 18\)
  2. Inside parentheses — add: \(-7 + 18 = 11\)
  3. Multiply: \(6(11) = 66\)
  4. Add: \(-18 + 66 = 48\)

Reference

Mathematics for college students

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