Solve 12x + 12 = 204
The solution of 12x + 12 = 204 is x = 16.
How to work it out
- 1
The goal is to get x alone. Undo the operations in the opposite order: first the addition, then the multiplication.
- 2
Subtract 12 from both sides:
- 3
Divide both sides by 12:
- 4
Check: put x = 16 back into the equation.
LaTeX source of the formulas on this page
\[ 12x + 12 = 204\ \Rightarrow\ x = 16 \]
\[ 12x + 12 = 204 \]
\[ 12x + 12 - 12 = 204 - 12 \ \Rightarrow\ 12x = 192 \]
\[ \frac{12x}{12} = \frac{192}{12} \ \Rightarrow\ x = 16 \]
\[ 12\cdot16 + 12 = 192 + 12 = 204 \checkmark \]Trying values of x in 12x + 12 = 204
| x | 12x + 12 | Equals 204? |
|---|---|---|
| 14 | 180 | no |
| 15 | 192 | no |
| 16 | 204 | yes |
| 17 | 216 | no |
| 18 | 228 | no |
Questions
What is x in 12x + 12 = 204?
The solution of 12x + 12 = 204 is x = 16.
How do you solve 12x + 12 = 204?
Subtract 12 from both sides to get 12x = 192, then divide both sides by 12 to get x = 16.
How do I check the answer?
Replace x by 16: 12(16) + 12 = 204, which is 204.