Question

simplify the expression: 3(-9 - 7t) + 9

Explanation:

Step1: Apply distributive property

$3(-9 - 7t) = 3\times(-9) + 3\times(-7t) = -27 - 21t$

Step2: Add the constant term

$-27 - 21t + 9$

Step3: Combine like constants

$-27 + 9 = -18$

Answer:

$-21t - 18$