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Solve with work

99 = 7(-3x - 3) = x

2 Answers

4 votes

Answer:

x = -0.75

Explanation:

Step 1: Isolate the parentheses:

7(-3x - 3) = x

Divide both sides by 7:

-3x - 3 = x / 7

Step 2: Combine like terms:

Combine the x terms on the left side:

-3x - x - 3 = 0

-4x - 3 = 0

Step 3: Move the constant term to the right side:

-4x = 3

Divide both sides by -4:

x = -3 / 4

Therefore, the solution to the equation is x = -0.75.

User Boti
by
8.5k points
6 votes

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.

User Andy Zarzycki
by
8.9k points

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