Solve 8x + 3 = 35
The solution of 8x + 3 = 35 is x = 4.
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 8:
- 4
Check: put x = 4 back into the equation.
LaTeX source of the formulas on this page
\[ 8x + 3 = 35\ \Rightarrow\ x = 4 \]
\[ 8x + 3 = 35 \]
\[ 8x + 3 - 3 = 35 - 3 \ \Rightarrow\ 8x = 32 \]
\[ \frac{8x}{8} = \frac{32}{8} \ \Rightarrow\ x = 4 \]
\[ 8\cdot4 + 3 = 32 + 3 = 35 \checkmark \]Trying values of x in 8x + 3 = 35
| x | 8x + 3 | Equals 35? |
|---|---|---|
| 2 | 19 | no |
| 3 | 27 | no |
| 4 | 35 | yes |
| 5 | 43 | no |
| 6 | 51 | no |
Questions
What is x in 8x + 3 = 35?
The solution of 8x + 3 = 35 is x = 4.
How do you solve 8x + 3 = 35?
Subtract 3 from both sides to get 8x = 32, then divide both sides by 8 to get x = 4.
How do I check the answer?
Replace x by 4: 8(4) + 3 = 35, which is 35.