Solve 11x + 6 = 138
The solution of 11x + 6 = 138 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 6 from both sides:
- 3
Divide both sides by 11:
- 4
Check: put x = 12 back into the equation.
LaTeX source of the formulas on this page
\[ 11x + 6 = 138\ \Rightarrow\ x = 12 \]
\[ 11x + 6 = 138 \]
\[ 11x + 6 - 6 = 138 - 6 \ \Rightarrow\ 11x = 132 \]
\[ \frac{11x}{11} = \frac{132}{11} \ \Rightarrow\ x = 12 \]
\[ 11\cdot12 + 6 = 132 + 6 = 138 \checkmark \]Trying values of x in 11x + 6 = 138
| x | 11x + 6 | Equals 138? |
|---|---|---|
| 10 | 116 | no |
| 11 | 127 | no |
| 12 | 138 | yes |
| 13 | 149 | no |
| 14 | 160 | no |
Questions
What is x in 11x + 6 = 138?
The solution of 11x + 6 = 138 is x = 12.
How do you solve 11x + 6 = 138?
Subtract 6 from both sides to get 11x = 132, then divide both sides by 11 to get x = 12.
How do I check the answer?
Replace x by 12: 11(12) + 6 = 138, which is 138.