Solve 6x + 8 = 38
The solution of 6x + 8 = 38 is x = 5.
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 8 from both sides:
- 3
Divide both sides by 6:
- 4
Check: put x = 5 back into the equation.
LaTeX source of the formulas on this page
\[ 6x + 8 = 38\ \Rightarrow\ x = 5 \]
\[ 6x + 8 = 38 \]
\[ 6x + 8 - 8 = 38 - 8 \ \Rightarrow\ 6x = 30 \]
\[ \frac{6x}{6} = \frac{30}{6} \ \Rightarrow\ x = 5 \]
\[ 6\cdot5 + 8 = 30 + 8 = 38 \checkmark \]Trying values of x in 6x + 8 = 38
| x | 6x + 8 | Equals 38? |
|---|---|---|
| 3 | 26 | no |
| 4 | 32 | no |
| 5 | 38 | yes |
| 6 | 44 | no |
| 7 | 50 | no |
Questions
What is x in 6x + 8 = 38?
The solution of 6x + 8 = 38 is x = 5.
How do you solve 6x + 8 = 38?
Subtract 8 from both sides to get 6x = 30, then divide both sides by 6 to get x = 5.
How do I check the answer?
Replace x by 5: 6(5) + 8 = 38, which is 38.