Solve 3x + 11 = 59
The solution of 3x + 11 = 59 is x = 16.
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 3:
- 4
Check: put x = 16 back into the equation.
LaTeX source of the formulas on this page
\[ 3x + 11 = 59\ \Rightarrow\ x = 16 \]
\[ 3x + 11 = 59 \]
\[ 3x + 11 - 11 = 59 - 11 \ \Rightarrow\ 3x = 48 \]
\[ \frac{3x}{3} = \frac{48}{3} \ \Rightarrow\ x = 16 \]
\[ 3\cdot16 + 11 = 48 + 11 = 59 \checkmark \]Trying values of x in 3x + 11 = 59
| x | 3x + 11 | Equals 59? |
|---|---|---|
| 14 | 53 | no |
| 15 | 56 | no |
| 16 | 59 | yes |
| 17 | 62 | no |
| 18 | 65 | no |
Questions
What is x in 3x + 11 = 59?
The solution of 3x + 11 = 59 is x = 16.
How do you solve 3x + 11 = 59?
Subtract 11 from both sides to get 3x = 48, then divide both sides by 3 to get x = 16.
How do I check the answer?
Replace x by 16: 3(16) + 11 = 59, which is 59.