Solve 6x + 4 = 88
The solution of 6x + 4 = 88 is x = 14.
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 = 14 back into the equation.
LaTeX source of the formulas on this page
\[ 6x + 4 = 88\ \Rightarrow\ x = 14 \]
\[ 6x + 4 = 88 \]
\[ 6x + 4 - 4 = 88 - 4 \ \Rightarrow\ 6x = 84 \]
\[ \frac{6x}{6} = \frac{84}{6} \ \Rightarrow\ x = 14 \]
\[ 6\cdot14 + 4 = 84 + 4 = 88 \checkmark \]Trying values of x in 6x + 4 = 88
| x | 6x + 4 | Equals 88? |
|---|---|---|
| 12 | 76 | no |
| 13 | 82 | no |
| 14 | 88 | yes |
| 15 | 94 | no |
| 16 | 100 | no |
Questions
What is x in 6x + 4 = 88?
The solution of 6x + 4 = 88 is x = 14.
How do you solve 6x + 4 = 88?
Subtract 4 from both sides to get 6x = 84, then divide both sides by 6 to get x = 14.
How do I check the answer?
Replace x by 14: 6(14) + 4 = 88, which is 88.