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Solve 2x + 4 = 22

The solution of 2x + 4 = 22 is x = 9.

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The lines y = 2x + 4 and y = 22 meet at x = 9468101214101520253035x = 9y = 2x + 4y = 22
The lines y = 2x + 4 and y = 22 meet at x = 9. The solution of the equation is the x-coordinate of the point where the two sides are equal.

How to work it out

  1. 1

    The goal is to get x alone. Undo the operations in the opposite order: first the addition, then the multiplication.

    2x+4=222x + 4 = 22
  2. 2

    Subtract 4 from both sides:

    2x+4−4=22−4 ⇒ 2x=182x + 4 - 4 = 22 - 4 \ \Rightarrow\ 2x = 18
  3. 3

    Divide both sides by 2:

    2x2=182 ⇒ x=9\frac{2x}{2} = \frac{18}{2} \ \Rightarrow\ x = 9
  4. 4

    Check: put x = 9 back into the equation.

    2⋅9+4=18+4=22✓2\cdot9 + 4 = 18 + 4 = 22 \checkmark
LaTeX source of the formulas on this page
\[ 2x + 4 = 22\ \Rightarrow\ x = 9 \]
\[ 2x + 4 = 22 \]
\[ 2x + 4 - 4 = 22 - 4 \ \Rightarrow\ 2x = 18 \]
\[ \frac{2x}{2} = \frac{18}{2} \ \Rightarrow\ x = 9 \]
\[ 2\cdot9 + 4 = 18 + 4 = 22 \checkmark \]

Trying values of x in 2x + 4 = 22

x2x + 4Equals 22?
718no
820no
922yes
1024no
1126no

Questions

What is x in 2x + 4 = 22?

The solution of 2x + 4 = 22 is x = 9.

How do you solve 2x + 4 = 22?

Subtract 4 from both sides to get 2x = 18, then divide both sides by 2 to get x = 9.

How do I check the answer?

Replace x by 9: 2(9) + 4 = 22, which is 22.

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    Solve 2x + 4 = 22: x = 9 (steps and check) | WordGPT