5n (also known as 5xn)=10, which means n=2. n is the variable.
5-n=2 which means n=3
5/n (I'm trying to say 5 over n, also known as 5 divided by n)=20, which means n=0.25.
5+n=7 n=2.
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If you are talking about math wise then an example of a variable would be any letter in the alphabet. For example in the expression "x-3m" m and x are variables.
The coefficient is the number to be multiplied by the unknown variable as for example 3x whereas 3 is the coefficient and x is the unknown variable.
You use variable in math problems to help you solve the answer. For example, you could do 50+50=a. The (a) would be the variable. Or for that same problem you could do 50+y=100. Then the (y) would be the variable.
its the number before the variable. example: 2x itd be 2
An independent variable is exactly what it sounds like. It is a variable that stands alone and isn't changed by the other variables you are trying to measure. For example, someone's age might be an independent variable.