WordGPT

Solve 9x + 10 = 91

The solution of 9x + 10 = 91 is x = 9.

Explain it step by step in chatMake a short video of it
The lines y = 9x + 10 and y = 91 meet at x = 9468101214406080100120140x = 9y = 9x + 10y = 91
The lines y = 9x + 10 and y = 91 meet at x = 9. 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+10=919x + 10 = 91
  2. 2

    Subtract 10 from both sides:

    9x+10−10=91−10 ⇒ 9x=819x + 10 - 10 = 91 - 10 \ \Rightarrow\ 9x = 81
  3. 3

    Divide both sides by 9:

    9x9=819 ⇒ x=9\frac{9x}{9} = \frac{81}{9} \ \Rightarrow\ x = 9
  4. 4

    Check: put x = 9 back into the equation.

    9⋅9+10=81+10=91✓9\cdot9 + 10 = 81 + 10 = 91 \checkmark
LaTeX source of the formulas on this page
\[ 9x + 10 = 91\ \Rightarrow\ x = 9 \]
\[ 9x + 10 = 91 \]
\[ 9x + 10 - 10 = 91 - 10 \ \Rightarrow\ 9x = 81 \]
\[ \frac{9x}{9} = \frac{81}{9} \ \Rightarrow\ x = 9 \]
\[ 9\cdot9 + 10 = 81 + 10 = 91 \checkmark \]

Trying values of x in 9x + 10 = 91

x9x + 10Equals 91?
773no
882no
991yes
10100no
11109no

Questions

What is x in 9x + 10 = 91?

The solution of 9x + 10 = 91 is x = 9.

How do you solve 9x + 10 = 91?

Subtract 10 from both sides to get 9x = 81, then divide both sides by 9 to get x = 9.

How do I check the answer?

Replace x by 9: 9(9) + 10 = 91, which is 91.

Similar equations

    Solve 9x + 10 = 91: x = 9 (steps and check) | WordGPT