Solve 11x + 11 = 66
The solution of 11x + 11 = 66 is x = 5.
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 11 from both sides:
- 3
Divide both sides by 11:
- 4
Check: put x = 5 back into the equation.
LaTeX source of the formulas on this page
\[ 11x + 11 = 66\ \Rightarrow\ x = 5 \]
\[ 11x + 11 = 66 \]
\[ 11x + 11 - 11 = 66 - 11 \ \Rightarrow\ 11x = 55 \]
\[ \frac{11x}{11} = \frac{55}{11} \ \Rightarrow\ x = 5 \]
\[ 11\cdot5 + 11 = 55 + 11 = 66 \checkmark \]Trying values of x in 11x + 11 = 66
| x | 11x + 11 | Equals 66? |
|---|---|---|
| 3 | 44 | no |
| 4 | 55 | no |
| 5 | 66 | yes |
| 6 | 77 | no |
| 7 | 88 | no |
Questions
What is x in 11x + 11 = 66?
The solution of 11x + 11 = 66 is x = 5.
How do you solve 11x + 11 = 66?
Subtract 11 from both sides to get 11x = 55, then divide both sides by 11 to get x = 5.
How do I check the answer?
Replace x by 5: 11(5) + 11 = 66, which is 66.