Question

|3x+6|=15
answer as a decimal.

Answer 1

x = 3 or x = -7

Explanation:

-15 = 3x + 6 = 15

-15 = 3x + 6

-15 - 6 = 3x

-21 = 3x

-21/3 = x

x = -7

3x + 6 = 15

3x = 15 - 6

3x = 9

x = 9/3

x = 3

Answer 2

To solve the equation |3x + 6| = 15, we can split it into two separate equations:

1) 3x + 6 = 15
2) -(3x + 6) = 15

Solving equation 1:
3x + 6 = 15
3x = 15 - 6
3x = 9
x = 9/3
x = 3

Solving equation 2:
-(3x + 6) = 15
-3x - 6 = 15
-3x = 15 + 6
-3x = 21
x = 21/-3
x = -7

So, the solutions to the equation |3x + 6| = 15 are x = 3 and x = -7.