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Solve 11x + 3 = 168

The solution of 11x + 3 = 168 is x = 15.

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The lines y = 11x + 3 and y = 168 meet at x = 15101214161820100120140160180200220240x = 15y = 11x + 3y = 168
The lines y = 11x + 3 and y = 168 meet at x = 15. 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.

    11x+3=16811x + 3 = 168
  2. 2

    Subtract 3 from both sides:

    11x+3−3=168−3 ⇒ 11x=16511x + 3 - 3 = 168 - 3 \ \Rightarrow\ 11x = 165
  3. 3

    Divide both sides by 11:

    11x11=16511 ⇒ x=15\frac{11x}{11} = \frac{165}{11} \ \Rightarrow\ x = 15
  4. 4

    Check: put x = 15 back into the equation.

    11⋅15+3=165+3=168✓11\cdot15 + 3 = 165 + 3 = 168 \checkmark
LaTeX source of the formulas on this page
\[ 11x + 3 = 168\ \Rightarrow\ x = 15 \]
\[ 11x + 3 = 168 \]
\[ 11x + 3 - 3 = 168 - 3 \ \Rightarrow\ 11x = 165 \]
\[ \frac{11x}{11} = \frac{165}{11} \ \Rightarrow\ x = 15 \]
\[ 11\cdot15 + 3 = 165 + 3 = 168 \checkmark \]

Trying values of x in 11x + 3 = 168

x11x + 3Equals 168?
13146no
14157no
15168yes
16179no
17190no

Questions

What is x in 11x + 3 = 168?

The solution of 11x + 3 = 168 is x = 15.

How do you solve 11x + 3 = 168?

Subtract 3 from both sides to get 11x = 165, then divide both sides by 11 to get x = 15.

How do I check the answer?

Replace x by 15: 11(15) + 3 = 168, which is 168.

Similar equations

    Solve 11x + 3 = 168: x = 15 (steps and check) | WordGPT