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Solve 3x + 15 = 15

The solution of 3x + 15 = 15 is x = 0.

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The lines y = 3x + 15 and y = 15 meet at x = 0-6-4-2246-55101520253035x = 0y = 3x + 15y = 15
The lines y = 3x + 15 and y = 15 meet at x = 0. 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+15=153x + 15 = 15
  2. 2

    Subtract 15 from both sides:

    3x+15−15=15−15 ⇒ 3x=03x + 15 - 15 = 15 - 15 \ \Rightarrow\ 3x = 0
  3. 3

    Divide both sides by 3:

    3x3=03 ⇒ x=0\frac{3x}{3} = \frac{0}{3} \ \Rightarrow\ x = 0
  4. 4

    Check: put x = 0 back into the equation.

    3⋅0+15=0+15=15✓3\cdot0 + 15 = 0 + 15 = 15 \checkmark
LaTeX source of the formulas on this page
\[ 3x + 15 = 15\ \Rightarrow\ x = 0 \]
\[ 3x + 15 = 15 \]
\[ 3x + 15 - 15 = 15 - 15 \ \Rightarrow\ 3x = 0 \]
\[ \frac{3x}{3} = \frac{0}{3} \ \Rightarrow\ x = 0 \]
\[ 3\cdot0 + 15 = 0 + 15 = 15 \checkmark \]

Trying values of x in 3x + 15 = 15

x3x + 15Equals 15?
-29no
-112no
015yes
118no
221no

Questions

What is x in 3x + 15 = 15?

The solution of 3x + 15 = 15 is x = 0.

How do you solve 3x + 15 = 15?

Subtract 15 from both sides to get 3x = 0, then divide both sides by 3 to get x = 0.

How do I check the answer?

Replace x by 0: 3(0) + 15 = 15, which is 15.

Similar equations

    Solve 3x + 15 = 15: x = 0 (steps and check) | WordGPT