Solve 2x + 12 = 50
The solution of 2x + 12 = 50 is x = 19.
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 12 from both sides:
- 3
Divide both sides by 2:
- 4
Check: put x = 19 back into the equation.
LaTeX source of the formulas on this page
\[ 2x + 12 = 50\ \Rightarrow\ x = 19 \]
\[ 2x + 12 = 50 \]
\[ 2x + 12 - 12 = 50 - 12 \ \Rightarrow\ 2x = 38 \]
\[ \frac{2x}{2} = \frac{38}{2} \ \Rightarrow\ x = 19 \]
\[ 2\cdot19 + 12 = 38 + 12 = 50 \checkmark \]Trying values of x in 2x + 12 = 50
| x | 2x + 12 | Equals 50? |
|---|---|---|
| 17 | 46 | no |
| 18 | 48 | no |
| 19 | 50 | yes |
| 20 | 52 | no |
| 21 | 54 | no |
Questions
What is x in 2x + 12 = 50?
The solution of 2x + 12 = 50 is x = 19.
How do you solve 2x + 12 = 50?
Subtract 12 from both sides to get 2x = 38, then divide both sides by 2 to get x = 19.
How do I check the answer?
Replace x by 19: 2(19) + 12 = 50, which is 50.