Solve 7x + 11 = 53
The solution of 7x + 11 = 53 is x = 6.
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 11 from both sides:
- 3
Divide both sides by 7:
- 4
Check: put x = 6 back into the equation.
LaTeX source of the formulas on this page
\[ 7x + 11 = 53\ \Rightarrow\ x = 6 \]
\[ 7x + 11 = 53 \]
\[ 7x + 11 - 11 = 53 - 11 \ \Rightarrow\ 7x = 42 \]
\[ \frac{7x}{7} = \frac{42}{7} \ \Rightarrow\ x = 6 \]
\[ 7\cdot6 + 11 = 42 + 11 = 53 \checkmark \]Trying values of x in 7x + 11 = 53
| x | 7x + 11 | Equals 53? |
|---|---|---|
| 4 | 39 | no |
| 5 | 46 | no |
| 6 | 53 | yes |
| 7 | 60 | no |
| 8 | 67 | no |
Questions
What is x in 7x + 11 = 53?
The solution of 7x + 11 = 53 is x = 6.
How do you solve 7x + 11 = 53?
Subtract 11 from both sides to get 7x = 42, then divide both sides by 7 to get x = 6.
How do I check the answer?
Replace x by 6: 7(6) + 11 = 53, which is 53.