Solve 5x + 3 = 63
The solution of 5x + 3 = 63 is x = 12.
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 3 from both sides:
- 3
Divide both sides by 5:
- 4
Check: put x = 12 back into the equation.
LaTeX source of the formulas on this page
\[ 5x + 3 = 63\ \Rightarrow\ x = 12 \]
\[ 5x + 3 = 63 \]
\[ 5x + 3 - 3 = 63 - 3 \ \Rightarrow\ 5x = 60 \]
\[ \frac{5x}{5} = \frac{60}{5} \ \Rightarrow\ x = 12 \]
\[ 5\cdot12 + 3 = 60 + 3 = 63 \checkmark \]Trying values of x in 5x + 3 = 63
| x | 5x + 3 | Equals 63? |
|---|---|---|
| 10 | 53 | no |
| 11 | 58 | no |
| 12 | 63 | yes |
| 13 | 68 | no |
| 14 | 73 | no |
Questions
What is x in 5x + 3 = 63?
The solution of 5x + 3 = 63 is x = 12.
How do you solve 5x + 3 = 63?
Subtract 3 from both sides to get 5x = 60, then divide both sides by 5 to get x = 12.
How do I check the answer?
Replace x by 12: 5(12) + 3 = 63, which is 63.