Evaluate: (-24 * 4 * (-15))/(5 * 8 * 12)

Expression: $\frac{ -24 \times 4 \times \left( -15 \right) }{ 5 \times 8 \times 12 }$

Use $\frac{ -a }{ b }=\frac{ a }{ -b }=-\frac{ a }{ b }$ to rewrite the fraction

$\frac{ 24 \times 4 \times 15 }{ 5 \times 8 \times 12 }$

Cancel out the common factor $8$

$\frac{ 3 \times 4 \times 15 }{ 5 \times 12 }$

Cancel out the common factor $5$

$\frac{ 3 \times 4 \times 3 }{ 12 }$

Cancel out the common factor $4$

$\frac{ 3 \times 3 }{ 3 }$

Cancel out the common factor $3$

$3$