Solve 11x + 4 = 158
The solution of 11x + 4 = 158 is x = 14.
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 4 from both sides:
- 3
Divide both sides by 11:
- 4
Check: put x = 14 back into the equation.
LaTeX source of the formulas on this page
\[ 11x + 4 = 158\ \Rightarrow\ x = 14 \]
\[ 11x + 4 = 158 \]
\[ 11x + 4 - 4 = 158 - 4 \ \Rightarrow\ 11x = 154 \]
\[ \frac{11x}{11} = \frac{154}{11} \ \Rightarrow\ x = 14 \]
\[ 11\cdot14 + 4 = 154 + 4 = 158 \checkmark \]Trying values of x in 11x + 4 = 158
| x | 11x + 4 | Equals 158? |
|---|---|---|
| 12 | 136 | no |
| 13 | 147 | no |
| 14 | 158 | yes |
| 15 | 169 | no |
| 16 | 180 | no |
Questions
What is x in 11x + 4 = 158?
The solution of 11x + 4 = 158 is x = 14.
How do you solve 11x + 4 = 158?
Subtract 4 from both sides to get 11x = 154, then divide both sides by 11 to get x = 14.
How do I check the answer?
Replace x by 14: 11(14) + 4 = 158, which is 158.