Solve 6x + 4 = 64
The solution of 6x + 4 = 64 is x = 10.
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 4 from both sides:
- 3
Divide both sides by 6:
- 4
Check: put x = 10 back into the equation.
LaTeX source of the formulas on this page
\[ 6x + 4 = 64\ \Rightarrow\ x = 10 \]
\[ 6x + 4 = 64 \]
\[ 6x + 4 - 4 = 64 - 4 \ \Rightarrow\ 6x = 60 \]
\[ \frac{6x}{6} = \frac{60}{6} \ \Rightarrow\ x = 10 \]
\[ 6\cdot10 + 4 = 60 + 4 = 64 \checkmark \]Trying values of x in 6x + 4 = 64
| x | 6x + 4 | Equals 64? |
|---|---|---|
| 8 | 52 | no |
| 9 | 58 | no |
| 10 | 64 | yes |
| 11 | 70 | no |
| 12 | 76 | no |
Questions
What is x in 6x + 4 = 64?
The solution of 6x + 4 = 64 is x = 10.
How do you solve 6x + 4 = 64?
Subtract 4 from both sides to get 6x = 60, then divide both sides by 6 to get x = 10.
How do I check the answer?
Replace x by 10: 6(10) + 4 = 64, which is 64.