Solve 7x − 12 = −26

The solution of 7x − 12 = −26 is x = -2.

7x - 12 = -26\ \Rightarrow\ x = -2

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The lines y = 7x − 12 and y = -26 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.
$7x - 12 = -26$
2
Add 12 to both sides:
$7x - 12 + 12 = -26 + 12 \ \Rightarrow\ 7x = -14$
3
Divide both sides by 7:
$\frac{7x}{7} = \frac{-14}{7} \ \Rightarrow\ x = -2$
4
Check: put x = -2 back into the equation.
$7\cdot(-2) - 12 = -14 - 12 = -26 \checkmark$

LaTeX source of the formulas on this page

\[ 7x - 12 = -26\ \Rightarrow\ x = -2 \]
\[ 7x - 12 = -26 \]
\[ 7x - 12 + 12 = -26 + 12 \ \Rightarrow\ 7x = -14 \]
\[ \frac{7x}{7} = \frac{-14}{7} \ \Rightarrow\ x = -2 \]
\[ 7\cdot(-2) - 12 = -14 - 12 = -26 \checkmark \]

Trying values of x in 7x − 12 = −26

x	7x − 12	Equals -26?
-4	-40	no
-3	-33	no
-2	-26	yes
-1	-19	no
0	-12	no

Questions

What is x in 7x − 12 = −26?

The solution of 7x − 12 = −26 is x = -2.

How do you solve 7x − 12 = −26?

Add 12 to both sides to get 7x = -14, then divide both sides by 7 to get x = -2.

How do I check the answer?

Replace x by -2: 7(-2) − 12 = -26, which is -26.

Solve 7x − 12 = −26

How to work it out

Trying values of x in 7x − 12 = −26

Questions

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