WordGPT

Solve 8x + 11 = 139

The solution of 8x + 11 = 139 is x = 16.

Explain it step by step in chatMake a short video of it
The lines y = 8x + 11 and y = 139 meet at x = 1610121416182022100120140160180x = 16y = 8x + 11y = 139
The lines y = 8x + 11 and y = 139 meet at x = 16. 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.

    8x+11=1398x + 11 = 139
  2. 2

    Subtract 11 from both sides:

    8x+11−11=139−11 ⇒ 8x=1288x + 11 - 11 = 139 - 11 \ \Rightarrow\ 8x = 128
  3. 3

    Divide both sides by 8:

    8x8=1288 ⇒ x=16\frac{8x}{8} = \frac{128}{8} \ \Rightarrow\ x = 16
  4. 4

    Check: put x = 16 back into the equation.

    8⋅16+11=128+11=139✓8\cdot16 + 11 = 128 + 11 = 139 \checkmark
LaTeX source of the formulas on this page
\[ 8x + 11 = 139\ \Rightarrow\ x = 16 \]
\[ 8x + 11 = 139 \]
\[ 8x + 11 - 11 = 139 - 11 \ \Rightarrow\ 8x = 128 \]
\[ \frac{8x}{8} = \frac{128}{8} \ \Rightarrow\ x = 16 \]
\[ 8\cdot16 + 11 = 128 + 11 = 139 \checkmark \]

Trying values of x in 8x + 11 = 139

x8x + 11Equals 139?
14123no
15131no
16139yes
17147no
18155no

Questions

What is x in 8x + 11 = 139?

The solution of 8x + 11 = 139 is x = 16.

How do you solve 8x + 11 = 139?

Subtract 11 from both sides to get 8x = 128, then divide both sides by 8 to get x = 16.

How do I check the answer?

Replace x by 16: 8(16) + 11 = 139, which is 139.

Similar equations

    Solve 8x + 11 = 139: x = 16 (steps and check) | WordGPT