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Solve 2x + 15 = 49

The solution of 2x + 15 = 49 is x = 17.

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The lines y = 2x + 15 and y = 49 meet at x = 17121416182022354045505560x = 17y = 2x + 15y = 49
The lines y = 2x + 15 and y = 49 meet at x = 17. 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=492x + 15 = 49
  2. 2

    Subtract 15 from both sides:

    2x+15−15=49−15 ⇒ 2x=342x + 15 - 15 = 49 - 15 \ \Rightarrow\ 2x = 34
  3. 3

    Divide both sides by 2:

    2x2=342 ⇒ x=17\frac{2x}{2} = \frac{34}{2} \ \Rightarrow\ x = 17
  4. 4

    Check: put x = 17 back into the equation.

    2⋅17+15=34+15=49✓2\cdot17 + 15 = 34 + 15 = 49 \checkmark
LaTeX source of the formulas on this page
\[ 2x + 15 = 49\ \Rightarrow\ x = 17 \]
\[ 2x + 15 = 49 \]
\[ 2x + 15 - 15 = 49 - 15 \ \Rightarrow\ 2x = 34 \]
\[ \frac{2x}{2} = \frac{34}{2} \ \Rightarrow\ x = 17 \]
\[ 2\cdot17 + 15 = 34 + 15 = 49 \checkmark \]

Trying values of x in 2x + 15 = 49

x2x + 15Equals 49?
1545no
1647no
1749yes
1851no
1953no

Questions

What is x in 2x + 15 = 49?

The solution of 2x + 15 = 49 is x = 17.

How do you solve 2x + 15 = 49?

Subtract 15 from both sides to get 2x = 34, then divide both sides by 2 to get x = 17.

How do I check the answer?

Replace x by 17: 2(17) + 15 = 49, which is 49.

Similar equations

    Solve 2x + 15 = 49: x = 17 (steps and check) | WordGPT