volume_mute
Fraction Bar as a Grouping Symbol
publish date: 2026/05/07 22:17:47.915125 UTC
volume_mute
Evaluate: \(\dfrac{-20 + 3(-5)}{21 - (-4)^2}\)
Correct Answer
\(-7\)
Explanation
Evaluate numerator and denominator separately:
- Numerator: \(-20 + 3(-5) = -20 + (-15) = -35\)
- Denominator: \(21 - (-4)^2 = 21 - 16 = 5\)
- Divide: \(-35 \div 5 = -7\)
Reference
Mathematics for college students