Solve 8x + 11 = 27
The solution of 8x + 11 = 27 is x = 2.
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 8:
- 4
Check: put x = 2 back into the equation.
LaTeX source of the formulas on this page
\[ 8x + 11 = 27\ \Rightarrow\ x = 2 \]
\[ 8x + 11 = 27 \]
\[ 8x + 11 - 11 = 27 - 11 \ \Rightarrow\ 8x = 16 \]
\[ \frac{8x}{8} = \frac{16}{8} \ \Rightarrow\ x = 2 \]
\[ 8\cdot2 + 11 = 16 + 11 = 27 \checkmark \]Trying values of x in 8x + 11 = 27
| x | 8x + 11 | Equals 27? |
|---|---|---|
| 0 | 11 | no |
| 1 | 19 | no |
| 2 | 27 | yes |
| 3 | 35 | no |
| 4 | 43 | no |
Questions
What is x in 8x + 11 = 27?
The solution of 8x + 11 = 27 is x = 2.
How do you solve 8x + 11 = 27?
Subtract 11 from both sides to get 8x = 16, then divide both sides by 8 to get x = 2.
How do I check the answer?
Replace x by 2: 8(2) + 11 = 27, which is 27.