Write two expressions that are equivalent to the expression below.

$\left(9\ -\ c\right)\ +\ \left(9\ -\ c\right)\ +\ \left(9\ -\ c\right)\ +\ \left(9\ -\ c\right)$

Respond in the space provided.

1 answer

$4 \cdot (9 - c)$

$4 \cdot 9 - 4 \cdot c$