Solve 11x + 2 = 145
The solution of 11x + 2 = 145 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 2 from both sides:
- 3
Divide both sides by 11:
- 4
Check: put x = 13 back into the equation.
LaTeX source of the formulas on this page
\[ 11x + 2 = 145\ \Rightarrow\ x = 13 \]
\[ 11x + 2 = 145 \]
\[ 11x + 2 - 2 = 145 - 2 \ \Rightarrow\ 11x = 143 \]
\[ \frac{11x}{11} = \frac{143}{11} \ \Rightarrow\ x = 13 \]
\[ 11\cdot13 + 2 = 143 + 2 = 145 \checkmark \]Trying values of x in 11x + 2 = 145
| x | 11x + 2 | Equals 145? |
|---|---|---|
| 11 | 123 | no |
| 12 | 134 | no |
| 13 | 145 | yes |
| 14 | 156 | no |
| 15 | 167 | no |
Questions
What is x in 11x + 2 = 145?
The solution of 11x + 2 = 145 is x = 13.
How do you solve 11x + 2 = 145?
Subtract 2 from both sides to get 11x = 143, then divide both sides by 11 to get x = 13.
How do I check the answer?
Replace x by 13: 11(13) + 2 = 145, which is 145.