Solve 11x + 9 = 163
The solution of 11x + 9 = 163 is x = 14.
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 9 from both sides:
- 3
Divide both sides by 11:
- 4
Check: put x = 14 back into the equation.
LaTeX source of the formulas on this page
\[ 11x + 9 = 163\ \Rightarrow\ x = 14 \]
\[ 11x + 9 = 163 \]
\[ 11x + 9 - 9 = 163 - 9 \ \Rightarrow\ 11x = 154 \]
\[ \frac{11x}{11} = \frac{154}{11} \ \Rightarrow\ x = 14 \]
\[ 11\cdot14 + 9 = 154 + 9 = 163 \checkmark \]Trying values of x in 11x + 9 = 163
| x | 11x + 9 | Equals 163? |
|---|---|---|
| 12 | 141 | no |
| 13 | 152 | no |
| 14 | 163 | yes |
| 15 | 174 | no |
| 16 | 185 | no |
Questions
What is x in 11x + 9 = 163?
The solution of 11x + 9 = 163 is x = 14.
How do you solve 11x + 9 = 163?
Subtract 9 from both sides to get 11x = 154, then divide both sides by 11 to get x = 14.
How do I check the answer?
Replace x by 14: 11(14) + 9 = 163, which is 163.