Answer: x = -6
Explanation:
To solve for x, we need to isolate it on one side of the equation. Here are the steps:
99 = 7(-3x - 3) = x
First, we simplify the expression inside the parentheses by multiplying it by 7:
99 = -21x - 21 = x
Next, we subtract x from both sides to eliminate it on the right side:
99 - x = -21x - 21
Then, we add 21x to both sides to eliminate it on the left side:
99 - x + 21x = -21
We simplify by combining the like terms:
99 + 20x = -21
Finally, we subtract 99 from both sides and divide by 20 to get x:
99 + 20x - 99 = -21 - 99
20x = -120
x = -120 / 20
x = -6
Therefore, the solution is x = -6.