Solve 11x ā 5 = ā104
The solution of 11x ā 5 = ā104 is x = -9.
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 5 to both sides:
- 3
Divide both sides by 11:
- 4
Check: put x = -9 back into the equation.
LaTeX source of the formulas on this page
\[ 11x - 5 = -104\ \Rightarrow\ x = -9 \]
\[ 11x - 5 = -104 \]
\[ 11x - 5 + 5 = -104 + 5 \ \Rightarrow\ 11x = -99 \]
\[ \frac{11x}{11} = \frac{-99}{11} \ \Rightarrow\ x = -9 \]
\[ 11\cdot(-9) - 5 = -99 - 5 = -104 \checkmark \]Trying values of x in 11x ā 5 = ā104
| x | 11x ā 5 | Equals -104? |
|---|---|---|
| -11 | -126 | no |
| -10 | -115 | no |
| -9 | -104 | yes |
| -8 | -93 | no |
| -7 | -82 | no |
Questions
What is x in 11x ā 5 = ā104?
The solution of 11x ā 5 = ā104 is x = -9.
How do you solve 11x ā 5 = ā104?
Add 5 to both sides to get 11x = -99, then divide both sides by 11 to get x = -9.
How do I check the answer?
Replace x by -9: 11(-9) ā 5 = -104, which is -104.