Solve 11x − 8 = 25

The solution of 11x − 8 = 25 is x = 3.

11x - 8 = 25\ \Rightarrow\ x = 3

Explain it step by step in chat Make a short video of it

The lines y = 11x − 8 and y = 25 meet at x = 3. 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.
$11x - 8 = 25$
2
Add 8 to both sides:
$11x - 8 + 8 = 25 + 8 \ \Rightarrow\ 11x = 33$
3
Divide both sides by 11:
$\frac{11x}{11} = \frac{33}{11} \ \Rightarrow\ x = 3$
4
Check: put x = 3 back into the equation.
$11\cdot3 - 8 = 33 - 8 = 25 \checkmark$

LaTeX source of the formulas on this page

\[ 11x - 8 = 25\ \Rightarrow\ x = 3 \]
\[ 11x - 8 = 25 \]
\[ 11x - 8 + 8 = 25 + 8 \ \Rightarrow\ 11x = 33 \]
\[ \frac{11x}{11} = \frac{33}{11} \ \Rightarrow\ x = 3 \]
\[ 11\cdot3 - 8 = 33 - 8 = 25 \checkmark \]

Trying values of x in 11x − 8 = 25

x	11x − 8	Equals 25?
1	3	no
2	14	no
3	25	yes
4	36	no
5	47	no

Questions

What is x in 11x − 8 = 25?

The solution of 11x − 8 = 25 is x = 3.

How do you solve 11x − 8 = 25?

Add 8 to both sides to get 11x = 33, then divide both sides by 11 to get x = 3.

How do I check the answer?

Replace x by 3: 11(3) − 8 = 25, which is 25.

Solve 11x − 8 = 25

How to work it out

Trying values of x in 11x − 8 = 25

Questions

Similar equations