Answer:
x = 9
Step-by-step explanation:
Move the numbers to one side and the variables to another.
91 + x = 100
x = 100 - 91
x = 9
Answer: [tex]x=9[/tex]
Move all terms to the left
[tex]91+x-(100)=0[/tex]
Add all the numbers together, and all the variables
[tex]x-9=0[/tex]
Move all terms containing x to the left, all other terms to the right
[tex]x=9[/tex]
