Solve 12x − 13 = 11

The solution of 12x − 13 = 11 is x = 2.

12x - 13 = 11\ \Rightarrow\ x = 2

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The lines y = 12x − 13 and y = 11 meet at x = 2. 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.
$12x - 13 = 11$
2
Add 13 to both sides:
$12x - 13 + 13 = 11 + 13 \ \Rightarrow\ 12x = 24$
3
Divide both sides by 12:
$\frac{12x}{12} = \frac{24}{12} \ \Rightarrow\ x = 2$
4
Check: put x = 2 back into the equation.
$12\cdot2 - 13 = 24 - 13 = 11 \checkmark$

LaTeX source of the formulas on this page

\[ 12x - 13 = 11\ \Rightarrow\ x = 2 \]
\[ 12x - 13 = 11 \]
\[ 12x - 13 + 13 = 11 + 13 \ \Rightarrow\ 12x = 24 \]
\[ \frac{12x}{12} = \frac{24}{12} \ \Rightarrow\ x = 2 \]
\[ 12\cdot2 - 13 = 24 - 13 = 11 \checkmark \]

Trying values of x in 12x − 13 = 11

x	12x − 13	Equals 11?
0	-13	no
1	-1	no
2	11	yes
3	23	no
4	35	no

Questions

What is x in 12x − 13 = 11?

The solution of 12x − 13 = 11 is x = 2.

How do you solve 12x − 13 = 11?

Add 13 to both sides to get 12x = 24, then divide both sides by 12 to get x = 2.

How do I check the answer?

Replace x by 2: 12(2) − 13 = 11, which is 11.

Solve 12x − 13 = 11

How to work it out

Trying values of x in 12x − 13 = 11

Questions

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