Simplify 12*(-3i-4)

$12 \cdot (- 3 i - 4)$

Apply the distributive property.

$12 (- 3 i) + 12 \cdot - 4$

Simplify the expression.

Multiply $- 3$ by $12$ .

$- 36 i + 12 \cdot - 4$

Multiply $12$ by $- 4$ .

$- 36 i - 48$

Reorder $- 36 i$ and $- 48$ .

$- 48 - 36 i$

$- 48 - 36 i$

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