Solve 3x + 10 = 58
The solution of 3x + 10 = 58 is x = 16.
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 10 from both sides:
- 3
Divide both sides by 3:
- 4
Check: put x = 16 back into the equation.
LaTeX source of the formulas on this page
\[ 3x + 10 = 58\ \Rightarrow\ x = 16 \]
\[ 3x + 10 = 58 \]
\[ 3x + 10 - 10 = 58 - 10 \ \Rightarrow\ 3x = 48 \]
\[ \frac{3x}{3} = \frac{48}{3} \ \Rightarrow\ x = 16 \]
\[ 3\cdot16 + 10 = 48 + 10 = 58 \checkmark \]Trying values of x in 3x + 10 = 58
| x | 3x + 10 | Equals 58? |
|---|---|---|
| 14 | 52 | no |
| 15 | 55 | no |
| 16 | 58 | yes |
| 17 | 61 | no |
| 18 | 64 | no |
Questions
What is x in 3x + 10 = 58?
The solution of 3x + 10 = 58 is x = 16.
How do you solve 3x + 10 = 58?
Subtract 10 from both sides to get 3x = 48, then divide both sides by 3 to get x = 16.
How do I check the answer?
Replace x by 16: 3(16) + 10 = 58, which is 58.