Solve 8x + 12 = 148
The solution of 8x + 12 = 148 is x = 17.
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 12 from both sides:
- 3
Divide both sides by 8:
- 4
Check: put x = 17 back into the equation.
LaTeX source of the formulas on this page
\[ 8x + 12 = 148\ \Rightarrow\ x = 17 \]
\[ 8x + 12 = 148 \]
\[ 8x + 12 - 12 = 148 - 12 \ \Rightarrow\ 8x = 136 \]
\[ \frac{8x}{8} = \frac{136}{8} \ \Rightarrow\ x = 17 \]
\[ 8\cdot17 + 12 = 136 + 12 = 148 \checkmark \]Trying values of x in 8x + 12 = 148
| x | 8x + 12 | Equals 148? |
|---|---|---|
| 15 | 132 | no |
| 16 | 140 | no |
| 17 | 148 | yes |
| 18 | 156 | no |
| 19 | 164 | no |
Questions
What is x in 8x + 12 = 148?
The solution of 8x + 12 = 148 is x = 17.
How do you solve 8x + 12 = 148?
Subtract 12 from both sides to get 8x = 136, then divide both sides by 8 to get x = 17.
How do I check the answer?
Replace x by 17: 8(17) + 12 = 148, which is 148.