Expression: $\left( -5 \right) \times \left( -9 \right) \times \left( -3 \right)$
Multiplying an odd number of negative terms makes the product negative $-\left( 5 \times 9 \times 3 \right)$
Multiply the numbers $-\left( 45 \times 3 \right)$
Multiply the numbers $-135$