Solve 10x + 13 = 153
The solution of 10x + 13 = 153 is x = 14.
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 13 from both sides:
- 3
Divide both sides by 10:
- 4
Check: put x = 14 back into the equation.
LaTeX source of the formulas on this page
\[ 10x + 13 = 153\ \Rightarrow\ x = 14 \]
\[ 10x + 13 = 153 \]
\[ 10x + 13 - 13 = 153 - 13 \ \Rightarrow\ 10x = 140 \]
\[ \frac{10x}{10} = \frac{140}{10} \ \Rightarrow\ x = 14 \]
\[ 10\cdot14 + 13 = 140 + 13 = 153 \checkmark \]Trying values of x in 10x + 13 = 153
| x | 10x + 13 | Equals 153? |
|---|---|---|
| 12 | 133 | no |
| 13 | 143 | no |
| 14 | 153 | yes |
| 15 | 163 | no |
| 16 | 173 | no |
Questions
What is x in 10x + 13 = 153?
The solution of 10x + 13 = 153 is x = 14.
How do you solve 10x + 13 = 153?
Subtract 13 from both sides to get 10x = 140, then divide both sides by 10 to get x = 14.
How do I check the answer?
Replace x by 14: 10(14) + 13 = 153, which is 153.