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Solve 2x + 15 = 29

The solution of 2x + 15 = 29 is x = 7.

The lines y = 2x + 15 and y = 29 meet at x = 724681012152025303540x = 7y = 2x + 15y = 29
The lines y = 2x + 15 and y = 29 meet at x = 7. 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+15=292x + 15 = 29
  2. 2

    Subtract 15 from both sides:

    2x+15−15=29−15 ⇒ 2x=142x + 15 - 15 = 29 - 15 \ \Rightarrow\ 2x = 14
  3. 3

    Divide both sides by 2:

    2x2=142 ⇒ x=7\frac{2x}{2} = \frac{14}{2} \ \Rightarrow\ x = 7
  4. 4

    Check: put x = 7 back into the equation.

    2⋅7+15=14+15=29✓2\cdot7 + 15 = 14 + 15 = 29 \checkmark
LaTeX source of the formulas on this page
\[ 2x + 15 = 29\ \Rightarrow\ x = 7 \]
\[ 2x + 15 = 29 \]
\[ 2x + 15 - 15 = 29 - 15 \ \Rightarrow\ 2x = 14 \]
\[ \frac{2x}{2} = \frac{14}{2} \ \Rightarrow\ x = 7 \]
\[ 2\cdot7 + 15 = 14 + 15 = 29 \checkmark \]

Trying values of x in 2x + 15 = 29

x2x + 15Equals 29?
525no
627no
729yes
831no
933no

Questions

What is x in 2x + 15 = 29?

The solution of 2x + 15 = 29 is x = 7.

How do you solve 2x + 15 = 29?

Subtract 15 from both sides to get 2x = 14, then divide both sides by 2 to get x = 7.

How do I check the answer?

Replace x by 7: 2(7) + 15 = 29, which is 29.

Similar equations

    Solve 2x + 15 = 29: x = 7 (steps and check) | WordGPT