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Solve 2x + 15 = 27

The solution of 2x + 15 = 27 is x = 6.

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The lines y = 2x + 15 and y = 27 meet at x = 624681012152025303540x = 6y = 2x + 15y = 27
The lines y = 2x + 15 and y = 27 meet at x = 6. 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=272x + 15 = 27
  2. 2

    Subtract 15 from both sides:

    2x+15−15=27−15 ⇒ 2x=122x + 15 - 15 = 27 - 15 \ \Rightarrow\ 2x = 12
  3. 3

    Divide both sides by 2:

    2x2=122 ⇒ x=6\frac{2x}{2} = \frac{12}{2} \ \Rightarrow\ x = 6
  4. 4

    Check: put x = 6 back into the equation.

    2⋅6+15=12+15=27✓2\cdot6 + 15 = 12 + 15 = 27 \checkmark
LaTeX source of the formulas on this page
\[ 2x + 15 = 27\ \Rightarrow\ x = 6 \]
\[ 2x + 15 = 27 \]
\[ 2x + 15 - 15 = 27 - 15 \ \Rightarrow\ 2x = 12 \]
\[ \frac{2x}{2} = \frac{12}{2} \ \Rightarrow\ x = 6 \]
\[ 2\cdot6 + 15 = 12 + 15 = 27 \checkmark \]

Trying values of x in 2x + 15 = 27

x2x + 15Equals 27?
423no
525no
627yes
729no
831no

Questions

What is x in 2x + 15 = 27?

The solution of 2x + 15 = 27 is x = 6.

How do you solve 2x + 15 = 27?

Subtract 15 from both sides to get 2x = 12, then divide both sides by 2 to get x = 6.

How do I check the answer?

Replace x by 6: 2(6) + 15 = 27, which is 27.

Similar equations

    Solve 2x + 15 = 27: x = 6 (steps and check) | WordGPT