Solve 2x − 2 = 2

The solution of 2x − 2 = 2 is x = 2.

2x - 2 = 2\ \Rightarrow\ x = 2

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

LaTeX source of the formulas on this page

\[ 2x - 2 = 2\ \Rightarrow\ x = 2 \]
\[ 2x - 2 = 2 \]
\[ 2x - 2 + 2 = 2 + 2 \ \Rightarrow\ 2x = 4 \]
\[ \frac{2x}{2} = \frac{4}{2} \ \Rightarrow\ x = 2 \]
\[ 2\cdot2 - 2 = 4 - 2 = 2 \checkmark \]

Trying values of x in 2x − 2 = 2

x	2x − 2	Equals 2?
0	-2	no
1	0	no
2	2	yes
3	4	no
4	6	no

Questions

What is x in 2x − 2 = 2?

The solution of 2x − 2 = 2 is x = 2.

How do you solve 2x − 2 = 2?

Add 2 to both sides to get 2x = 4, then divide both sides by 2 to get x = 2.

How do I check the answer?

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

Solve 2x − 2 = 2

How to work it out

Trying values of x in 2x − 2 = 2

Questions

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