Answer:
-30
Step-by-step explanation:
Plug in -2 for a & -5 for b in the expression given:
-3ab = (-3)(-2)(-5)
Multiply across. Note that:
Negative number x negative number = positive number.
Positive number x negative number = negative number.
(-3)(-2)(-5) = (6)(-5) = -30
-30 is your answer.
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