Positive × negative gives a negative answer.

\(4 \times 3 = 12\), so \(4 \times (-3) = -12\).

Negative × negative gives a positive answer.

\(7 \times 5 = 35\), so \((-7) \times (-5) = 35\).

Negative × positive gives a negative answer.

\(8 \times 6 = 48\), so \((-8) \times 6 = -48\).

First multiply 9 and \(-4\):

\(9 \times (-4) = -36\).

Then \(-36 \times 2 = -72\).

Multiply step by step:

\((-3) \times (-2) = 6\) (negative × negative = positive).

Then \(6 \times (-5) = -30\).