Solve 11x + 15 = 59
The solution of 11x + 15 = 59 is x = 4.
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 15 from both sides:
- 3
Divide both sides by 11:
- 4
Check: put x = 4 back into the equation.
LaTeX source of the formulas on this page
\[ 11x + 15 = 59\ \Rightarrow\ x = 4 \]
\[ 11x + 15 = 59 \]
\[ 11x + 15 - 15 = 59 - 15 \ \Rightarrow\ 11x = 44 \]
\[ \frac{11x}{11} = \frac{44}{11} \ \Rightarrow\ x = 4 \]
\[ 11\cdot4 + 15 = 44 + 15 = 59 \checkmark \]Trying values of x in 11x + 15 = 59
| x | 11x + 15 | Equals 59? |
|---|---|---|
| 2 | 37 | no |
| 3 | 48 | no |
| 4 | 59 | yes |
| 5 | 70 | no |
| 6 | 81 | no |
Questions
What is x in 11x + 15 = 59?
The solution of 11x + 15 = 59 is x = 4.
How do you solve 11x + 15 = 59?
Subtract 15 from both sides to get 11x = 44, then divide both sides by 11 to get x = 4.
How do I check the answer?
Replace x by 4: 11(4) + 15 = 59, which is 59.