Question

write an expression equivalent to $4(2d + 10 - 5d)$. $4(2d + 10 - 5d) = \square d + 40$

Explanation:

Step1: Combine like terms inside parentheses

$2d - 5d + 10 = -3d + 10$

Step2: Distribute the 4 to all terms

$4(-3d + 10) = 4\times(-3d) + 4\times10$

Step3: Calculate each product

$4\times(-3d) = -12d$, $4\times10 = 40$

Answer:

$-12$