Solve 2x + 4 = 6

The solution of 2x + 4 = 6 is x = 1.

2x + 4 = 6\ \Rightarrow\ x = 1

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The lines y = 2x + 4 and y = 6 meet at x = 1. 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 addition, then the multiplication.
$2x + 4 = 6$
2
Subtract 4 from both sides:
$2x + 4 - 4 = 6 - 4 \ \Rightarrow\ 2x = 2$
3
Divide both sides by 2:
$\frac{2x}{2} = \frac{2}{2} \ \Rightarrow\ x = 1$
4
Check: put x = 1 back into the equation.
$2\cdot1 + 4 = 2 + 4 = 6 \checkmark$

LaTeX source of the formulas on this page

\[ 2x + 4 = 6\ \Rightarrow\ x = 1 \]
\[ 2x + 4 = 6 \]
\[ 2x + 4 - 4 = 6 - 4 \ \Rightarrow\ 2x = 2 \]
\[ \frac{2x}{2} = \frac{2}{2} \ \Rightarrow\ x = 1 \]
\[ 2\cdot1 + 4 = 2 + 4 = 6 \checkmark \]

Trying values of x in 2x + 4 = 6

x	2x + 4	Equals 6?
-1	2	no
0	4	no
1	6	yes
2	8	no
3	10	no

Questions

What is x in 2x + 4 = 6?

The solution of 2x + 4 = 6 is x = 1.

How do you solve 2x + 4 = 6?

Subtract 4 from both sides to get 2x = 2, then divide both sides by 2 to get x = 1.

How do I check the answer?

Replace x by 1: 2(1) + 4 = 6, which is 6.

Solve 2x + 4 = 6

How to work it out

Trying values of x in 2x + 4 = 6

Questions

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