Solve 12x + 12 = 156
The solution of 12x + 12 = 156 is x = 12.
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 = 12 back into the equation.
LaTeX source of the formulas on this page
\[ 12x + 12 = 156\ \Rightarrow\ x = 12 \]
\[ 12x + 12 = 156 \]
\[ 12x + 12 - 12 = 156 - 12 \ \Rightarrow\ 12x = 144 \]
\[ \frac{12x}{12} = \frac{144}{12} \ \Rightarrow\ x = 12 \]
\[ 12\cdot12 + 12 = 144 + 12 = 156 \checkmark \]Trying values of x in 12x + 12 = 156
| x | 12x + 12 | Equals 156? |
|---|---|---|
| 10 | 132 | no |
| 11 | 144 | no |
| 12 | 156 | yes |
| 13 | 168 | no |
| 14 | 180 | no |
Questions
What is x in 12x + 12 = 156?
The solution of 12x + 12 = 156 is x = 12.
How do you solve 12x + 12 = 156?
Subtract 12 from both sides to get 12x = 144, then divide both sides by 12 to get x = 12.
How do I check the answer?
Replace x by 12: 12(12) + 12 = 156, which is 156.