WordGPT

Solve 12x + 3 = 15

The solution of 12x + 3 = 15 is x = 1.

Explain it step by step in chatMake a short video of it
The lines y = 12x + 3 and y = 15 meet at x = 1-4-2246-60-40-2020406080100x = 1y = 12x + 3y = 15
The lines y = 12x + 3 and y = 15 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.

    12x+3=1512x + 3 = 15
  2. 2

    Subtract 3 from both sides:

    12x+3−3=15−3 ⇒ 12x=1212x + 3 - 3 = 15 - 3 \ \Rightarrow\ 12x = 12
  3. 3

    Divide both sides by 12:

    12x12=1212 ⇒ x=1\frac{12x}{12} = \frac{12}{12} \ \Rightarrow\ x = 1
  4. 4

    Check: put x = 1 back into the equation.

    12⋅1+3=12+3=15✓12\cdot1 + 3 = 12 + 3 = 15 \checkmark
LaTeX source of the formulas on this page
\[ 12x + 3 = 15\ \Rightarrow\ x = 1 \]
\[ 12x + 3 = 15 \]
\[ 12x + 3 - 3 = 15 - 3 \ \Rightarrow\ 12x = 12 \]
\[ \frac{12x}{12} = \frac{12}{12} \ \Rightarrow\ x = 1 \]
\[ 12\cdot1 + 3 = 12 + 3 = 15 \checkmark \]

Trying values of x in 12x + 3 = 15

x12x + 3Equals 15?
-1-9no
03no
115yes
227no
339no

Questions

What is x in 12x + 3 = 15?

The solution of 12x + 3 = 15 is x = 1.

How do you solve 12x + 3 = 15?

Subtract 3 from both sides to get 12x = 12, then divide both sides by 12 to get x = 1.

How do I check the answer?

Replace x by 1: 12(1) + 3 = 15, which is 15.

Similar equations

    Solve 12x + 3 = 15: x = 1 (steps and check) | WordGPT