An unknown number
The variable is the letter, the thing that can be changed.
"n" stands for an unknown number.
Igual>>> ALGEBRA
In algebra, there will be letters. Each letter represents a number. Different letters stand for different numbers. e.g. x=1 but y=3. if there are many X's, they all mean the same thing.If there is a number before the letter, you multiply the number by what the letter represents. So 3p means 3*p. This is very simple algebra. I haven't learned complex algebra yet, but i can understand it. But can't explain it well.
An unknown number
The variable is the letter, the thing that can be changed.
It can mean that it is a vector.
"n" stands for an unknown number.
"b" is simply a letter in algebra to replace an unknown number.
d is part of algebra because it is a letter. Any letter in algebra is known as a variable. D is different from d in algebra. They are different.
In Algebra, "is" means Equal (=).
Igual>>> ALGEBRA
In algebra, there will be letters. Each letter represents a number. Different letters stand for different numbers. e.g. x=1 but y=3. if there are many X's, they all mean the same thing.If there is a number before the letter, you multiply the number by what the letter represents. So 3p means 3*p. This is very simple algebra. I haven't learned complex algebra yet, but i can understand it. But can't explain it well.
"And" in algebra usually means addition.
It usually refers to an introductory algebra class.
It mean to Subtract (-)