Solve 12x ā 10 = ā106
The solution of 12x ā 10 = ā106 is x = -8.
How to work it out
- 1
The goal is to get x alone. Undo the operations in the opposite order: first the subtraction, then the multiplication.
- 2
Add 10 to both sides:
- 3
Divide both sides by 12:
- 4
Check: put x = -8 back into the equation.
LaTeX source of the formulas on this page
\[ 12x - 10 = -106\ \Rightarrow\ x = -8 \]
\[ 12x - 10 = -106 \]
\[ 12x - 10 + 10 = -106 + 10 \ \Rightarrow\ 12x = -96 \]
\[ \frac{12x}{12} = \frac{-96}{12} \ \Rightarrow\ x = -8 \]
\[ 12\cdot(-8) - 10 = -96 - 10 = -106 \checkmark \]Trying values of x in 12x ā 10 = ā106
| x | 12x ā 10 | Equals -106? |
|---|---|---|
| -10 | -130 | no |
| -9 | -118 | no |
| -8 | -106 | yes |
| -7 | -94 | no |
| -6 | -82 | no |
Questions
What is x in 12x ā 10 = ā106?
The solution of 12x ā 10 = ā106 is x = -8.
How do you solve 12x ā 10 = ā106?
Add 10 to both sides to get 12x = -96, then divide both sides by 12 to get x = -8.
How do I check the answer?
Replace x by -8: 12(-8) ā 10 = -106, which is -106.