Solve 3x + 14 = 50
The solution of 3x + 14 = 50 is x = 12.
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 14 from both sides:
- 3
Divide both sides by 3:
- 4
Check: put x = 12 back into the equation.
LaTeX source of the formulas on this page
\[ 3x + 14 = 50\ \Rightarrow\ x = 12 \]
\[ 3x + 14 = 50 \]
\[ 3x + 14 - 14 = 50 - 14 \ \Rightarrow\ 3x = 36 \]
\[ \frac{3x}{3} = \frac{36}{3} \ \Rightarrow\ x = 12 \]
\[ 3\cdot12 + 14 = 36 + 14 = 50 \checkmark \]Trying values of x in 3x + 14 = 50
| x | 3x + 14 | Equals 50? |
|---|---|---|
| 10 | 44 | no |
| 11 | 47 | no |
| 12 | 50 | yes |
| 13 | 53 | no |
| 14 | 56 | no |
Questions
What is x in 3x + 14 = 50?
The solution of 3x + 14 = 50 is x = 12.
How do you solve 3x + 14 = 50?
Subtract 14 from both sides to get 3x = 36, then divide both sides by 3 to get x = 12.
How do I check the answer?
Replace x by 12: 3(12) + 14 = 50, which is 50.