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Solve 2x + 5 = 23

The solution of 2x + 5 = 23 is x = 9.

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The lines y = 2x + 5 and y = 23 meet at x = 9468101214101520253035x = 9y = 2x + 5y = 23
The lines y = 2x + 5 and y = 23 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+5=232x + 5 = 23
  2. 2

    Subtract 5 from both sides:

    2x+5−5=23−5 ⇒ 2x=182x + 5 - 5 = 23 - 5 \ \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+5=18+5=23✓2\cdot9 + 5 = 18 + 5 = 23 \checkmark
LaTeX source of the formulas on this page
\[ 2x + 5 = 23\ \Rightarrow\ x = 9 \]
\[ 2x + 5 = 23 \]
\[ 2x + 5 - 5 = 23 - 5 \ \Rightarrow\ 2x = 18 \]
\[ \frac{2x}{2} = \frac{18}{2} \ \Rightarrow\ x = 9 \]
\[ 2\cdot9 + 5 = 18 + 5 = 23 \checkmark \]

Trying values of x in 2x + 5 = 23

x2x + 5Equals 23?
719no
821no
923yes
1025no
1127no

Questions

What is x in 2x + 5 = 23?

The solution of 2x + 5 = 23 is x = 9.

How do you solve 2x + 5 = 23?

Subtract 5 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) + 5 = 23, which is 23.

Similar equations

    Solve 2x + 5 = 23: x = 9 (steps and check) | WordGPT