WordGPT

Solve 9x + 11 = 20

The solution of 9x + 11 = 20 is x = 1.

Explain it step by step in chatMake a short video of it
The lines y = 9x + 11 and y = 20 meet at x = 1-4-2246-40-2020406080x = 1y = 9x + 11y = 20
The lines y = 9x + 11 and y = 20 meet at x = 1. 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.

    9x+11=209x + 11 = 20
  2. 2

    Subtract 11 from both sides:

    9x+11−11=20−11 ⇒ 9x=99x + 11 - 11 = 20 - 11 \ \Rightarrow\ 9x = 9
  3. 3

    Divide both sides by 9:

    9x9=99 ⇒ x=1\frac{9x}{9} = \frac{9}{9} \ \Rightarrow\ x = 1
  4. 4

    Check: put x = 1 back into the equation.

    9⋅1+11=9+11=20✓9\cdot1 + 11 = 9 + 11 = 20 \checkmark
LaTeX source of the formulas on this page
\[ 9x + 11 = 20\ \Rightarrow\ x = 1 \]
\[ 9x + 11 = 20 \]
\[ 9x + 11 - 11 = 20 - 11 \ \Rightarrow\ 9x = 9 \]
\[ \frac{9x}{9} = \frac{9}{9} \ \Rightarrow\ x = 1 \]
\[ 9\cdot1 + 11 = 9 + 11 = 20 \checkmark \]

Trying values of x in 9x + 11 = 20

x9x + 11Equals 20?
-12no
011no
120yes
229no
338no

Questions

What is x in 9x + 11 = 20?

The solution of 9x + 11 = 20 is x = 1.

How do you solve 9x + 11 = 20?

Subtract 11 from both sides to get 9x = 9, then divide both sides by 9 to get x = 1.

How do I check the answer?

Replace x by 1: 9(1) + 11 = 20, which is 20.

Similar equations

    Solve 9x + 11 = 20: x = 1 (steps and check) | WordGPT