Solve 6x + 4 = 70
The solution of 6x + 4 = 70 is x = 11.
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 = 11 back into the equation.
LaTeX source of the formulas on this page
\[ 6x + 4 = 70\ \Rightarrow\ x = 11 \]
\[ 6x + 4 = 70 \]
\[ 6x + 4 - 4 = 70 - 4 \ \Rightarrow\ 6x = 66 \]
\[ \frac{6x}{6} = \frac{66}{6} \ \Rightarrow\ x = 11 \]
\[ 6\cdot11 + 4 = 66 + 4 = 70 \checkmark \]Trying values of x in 6x + 4 = 70
| x | 6x + 4 | Equals 70? |
|---|---|---|
| 9 | 58 | no |
| 10 | 64 | no |
| 11 | 70 | yes |
| 12 | 76 | no |
| 13 | 82 | no |
Questions
What is x in 6x + 4 = 70?
The solution of 6x + 4 = 70 is x = 11.
How do you solve 6x + 4 = 70?
Subtract 4 from both sides to get 6x = 66, then divide both sides by 6 to get x = 11.
How do I check the answer?
Replace x by 11: 6(11) + 4 = 70, which is 70.