Solve 10x + 7 = 167
The solution of 10x + 7 = 167 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 7 from both sides:
- 3
Divide both sides by 10:
- 4
Check: put x = 16 back into the equation.
LaTeX source of the formulas on this page
\[ 10x + 7 = 167\ \Rightarrow\ x = 16 \]
\[ 10x + 7 = 167 \]
\[ 10x + 7 - 7 = 167 - 7 \ \Rightarrow\ 10x = 160 \]
\[ \frac{10x}{10} = \frac{160}{10} \ \Rightarrow\ x = 16 \]
\[ 10\cdot16 + 7 = 160 + 7 = 167 \checkmark \]Trying values of x in 10x + 7 = 167
| x | 10x + 7 | Equals 167? |
|---|---|---|
| 14 | 147 | no |
| 15 | 157 | no |
| 16 | 167 | yes |
| 17 | 177 | no |
| 18 | 187 | no |
Questions
What is x in 10x + 7 = 167?
The solution of 10x + 7 = 167 is x = 16.
How do you solve 10x + 7 = 167?
Subtract 7 from both sides to get 10x = 160, then divide both sides by 10 to get x = 16.
How do I check the answer?
Replace x by 16: 10(16) + 7 = 167, which is 167.