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Solve 3x + 3 = 0

The solution of 3x + 3 = 0 is x = -1.

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The lines y = 3x + 3 and y = 0 meet at x = -1-6-4-224-20-15-10-55101520x = -1y = 3x + 3y = 0
The lines y = 3x + 3 and y = 0 meet at x = -1. The solution of the equation is the x-coordinate of the point where the two sides are equal.

How to work it out

  1. 1

    The goal is to get x alone. Undo the operations in the opposite order: first the addition, then the multiplication.

    3x+3=03x + 3 = 0
  2. 2

    Subtract 3 from both sides:

    3x+3āˆ’3=0āˆ’3Ā ā‡’Ā 3x=āˆ’33x + 3 - 3 = 0 - 3 \ \Rightarrow\ 3x = -3
  3. 3

    Divide both sides by 3:

    3x3=āˆ’33Ā ā‡’Ā x=āˆ’1\frac{3x}{3} = \frac{-3}{3} \ \Rightarrow\ x = -1
  4. 4

    Check: put x = -1 back into the equation.

    3ā‹…(āˆ’1)+3=āˆ’3+3=0āœ“3\cdot(-1) + 3 = -3 + 3 = 0 \checkmark
LaTeX source of the formulas on this page
\[ 3x + 3 = 0\ \Rightarrow\ x = -1 \]
\[ 3x + 3 = 0 \]
\[ 3x + 3 - 3 = 0 - 3 \ \Rightarrow\ 3x = -3 \]
\[ \frac{3x}{3} = \frac{-3}{3} \ \Rightarrow\ x = -1 \]
\[ 3\cdot(-1) + 3 = -3 + 3 = 0 \checkmark \]

Trying values of x in 3x + 3 = 0

x3x + 3Equals 0?
-3-6no
-2-3no
-10yes
03no
16no

Questions

What is x in 3x + 3 = 0?

The solution of 3x + 3 = 0 is x = -1.

How do you solve 3x + 3 = 0?

Subtract 3 from both sides to get 3x = -3, then divide both sides by 3 to get x = -1.

How do I check the answer?

Replace x by -1: 3(-1) + 3 = 0, which is 0.

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    Solve 3x + 3 = 0: x = -1 (steps and check) | WordGPT