310,766 views
45 votes
45 votes
-3(x + 9) = 15
Enter value for x

User Marcus Buffett
by
3.2k points

2 Answers

22 votes
22 votes

Answer:

x = -14

Explanation:

-3(x + 9) = 15

  1. -3 × x + -3 × 9 = 15
  2. -3x + (-27) = 15
  3. +27 on both sides
  4. -3x = 42

  5. ( - 3x)/( - 3) = (42)/( - 3)
  6. x = -14
User Eggplantelf
by
2.8k points
16 votes
16 votes

Answer:

x = -14

Explanation:

  • -3(x + 9) = 15

Divide each side by -3.

  • -3(x + 9)/-3 = 15/-3
  • x + 9 = -5

Subtract 9 from each side.

  • x + 9 - 9 = -5 - 9
  • x = -14
User Cory ODaniel
by
3.1k points