Solve 6x − 11 = 85

The solution of 6x − 11 = 85 is x = 16.

6x - 11 = 85\ \Rightarrow\ x = 16

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The lines y = 6x − 11 and y = 85 meet at x = 16. The solution of the equation is the x-coordinate of the point where the two sides are equal.

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.
$6x - 11 = 85$
2
Add 11 to both sides:
$6x - 11 + 11 = 85 + 11 \ \Rightarrow\ 6x = 96$
3
Divide both sides by 6:
$\frac{6x}{6} = \frac{96}{6} \ \Rightarrow\ x = 16$
4
Check: put x = 16 back into the equation.
$6\cdot16 - 11 = 96 - 11 = 85 \checkmark$

LaTeX source of the formulas on this page

\[ 6x - 11 = 85\ \Rightarrow\ x = 16 \]
\[ 6x - 11 = 85 \]
\[ 6x - 11 + 11 = 85 + 11 \ \Rightarrow\ 6x = 96 \]
\[ \frac{6x}{6} = \frac{96}{6} \ \Rightarrow\ x = 16 \]
\[ 6\cdot16 - 11 = 96 - 11 = 85 \checkmark \]

Trying values of x in 6x − 11 = 85

x	6x − 11	Equals 85?
14	73	no
15	79	no
16	85	yes
17	91	no
18	97	no

Questions

What is x in 6x − 11 = 85?

The solution of 6x − 11 = 85 is x = 16.

How do you solve 6x − 11 = 85?

Add 11 to both sides to get 6x = 96, then divide both sides by 6 to get x = 16.

How do I check the answer?

Replace x by 16: 6(16) − 11 = 85, which is 85.

Solve 6x − 11 = 85

How to work it out

Trying values of x in 6x − 11 = 85

Questions

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