Expand the Trigonometric Expression -3(5p+7)

$- 3 (5 p + 7)$

Apply the distributive property.

$- 3 (5 p) - 3 \cdot 7$

Multiply.

Multiply $5$ by $- 3$ .

$- 15 p - 3 \cdot 7$

Multiply $- 3$ by $7$ .

$- 15 p - 21$

$- 15 p - 21$

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