Solve 12x + 10 = 166
The solution of 12x + 10 = 166 is x = 13.
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 10 from both sides:
- 3
Divide both sides by 12:
- 4
Check: put x = 13 back into the equation.
LaTeX source of the formulas on this page
\[ 12x + 10 = 166\ \Rightarrow\ x = 13 \]
\[ 12x + 10 = 166 \]
\[ 12x + 10 - 10 = 166 - 10 \ \Rightarrow\ 12x = 156 \]
\[ \frac{12x}{12} = \frac{156}{12} \ \Rightarrow\ x = 13 \]
\[ 12\cdot13 + 10 = 156 + 10 = 166 \checkmark \]Trying values of x in 12x + 10 = 166
| x | 12x + 10 | Equals 166? |
|---|---|---|
| 11 | 142 | no |
| 12 | 154 | no |
| 13 | 166 | yes |
| 14 | 178 | no |
| 15 | 190 | no |
Questions
What is x in 12x + 10 = 166?
The solution of 12x + 10 = 166 is x = 13.
How do you solve 12x + 10 = 166?
Subtract 10 from both sides to get 12x = 156, then divide both sides by 12 to get x = 13.
How do I check the answer?
Replace x by 13: 12(13) + 10 = 166, which is 166.