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Solve 11x + 12 = 155

The solution of 11x + 12 = 155 is x = 13.

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The lines y = 11x + 12 and y = 155 meet at x = 138101214161880100120140160180200220x = 13y = 11x + 12y = 155
The lines y = 11x + 12 and y = 155 meet at x = 13. 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+12=15511x + 12 = 155
  2. 2

    Subtract 12 from both sides:

    11x+12−12=155−12 ⇒ 11x=14311x + 12 - 12 = 155 - 12 \ \Rightarrow\ 11x = 143
  3. 3

    Divide both sides by 11:

    11x11=14311 ⇒ x=13\frac{11x}{11} = \frac{143}{11} \ \Rightarrow\ x = 13
  4. 4

    Check: put x = 13 back into the equation.

    11⋅13+12=143+12=155✓11\cdot13 + 12 = 143 + 12 = 155 \checkmark
LaTeX source of the formulas on this page
\[ 11x + 12 = 155\ \Rightarrow\ x = 13 \]
\[ 11x + 12 = 155 \]
\[ 11x + 12 - 12 = 155 - 12 \ \Rightarrow\ 11x = 143 \]
\[ \frac{11x}{11} = \frac{143}{11} \ \Rightarrow\ x = 13 \]
\[ 11\cdot13 + 12 = 143 + 12 = 155 \checkmark \]

Trying values of x in 11x + 12 = 155

x11x + 12Equals 155?
11133no
12144no
13155yes
14166no
15177no

Questions

What is x in 11x + 12 = 155?

The solution of 11x + 12 = 155 is x = 13.

How do you solve 11x + 12 = 155?

Subtract 12 from both sides to get 11x = 143, then divide both sides by 11 to get x = 13.

How do I check the answer?

Replace x by 13: 11(13) + 12 = 155, which is 155.

Similar equations

    Solve 11x + 12 = 155: x = 13 (steps and check) | WordGPT