It is a numerical expression.
n is the variable.
In the expression 6n+3 the variable or the unknown is n
The variable is x.
You need to open the parentheses first. Then you can combine like terms (terms that have the same variable, or lack of variable).
It is a numerical expression.
n is the variable.
In the expression 6n+3 the variable or the unknown is n
The variable is x.
It is an expression in the variable, a.
You need to open the parentheses first. Then you can combine like terms (terms that have the same variable, or lack of variable).
It is an unknown variable
It is an equation in one variable.
It is a quadratic equation in the variable u.
-3
two p pluse 3
The are none because the coefficient of a term is the number in front of the variable as for example 3x whereas 3 is the coefficient and x is the variable and 3x means 3 times x