Solve 10x + 4 = 34
The solution of 10x + 4 = 34 is x = 3.
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 10:
- 4
Check: put x = 3 back into the equation.
LaTeX source of the formulas on this page
\[ 10x + 4 = 34\ \Rightarrow\ x = 3 \]
\[ 10x + 4 = 34 \]
\[ 10x + 4 - 4 = 34 - 4 \ \Rightarrow\ 10x = 30 \]
\[ \frac{10x}{10} = \frac{30}{10} \ \Rightarrow\ x = 3 \]
\[ 10\cdot3 + 4 = 30 + 4 = 34 \checkmark \]Trying values of x in 10x + 4 = 34
| x | 10x + 4 | Equals 34? |
|---|---|---|
| 1 | 14 | no |
| 2 | 24 | no |
| 3 | 34 | yes |
| 4 | 44 | no |
| 5 | 54 | no |
Questions
What is x in 10x + 4 = 34?
The solution of 10x + 4 = 34 is x = 3.
How do you solve 10x + 4 = 34?
Subtract 4 from both sides to get 10x = 30, then divide both sides by 10 to get x = 3.
How do I check the answer?
Replace x by 3: 10(3) + 4 = 34, which is 34.