How do we write the sum of three and seven in a
mathematical way, the word sum means addition and we
can write this as 3 plus 7. This is an expression and as it
has only numbers in it, it 's called a numerical expression
only numbers numerical expression now how do we use a
variable in its place, we can use it as x plus 7, where this x
can take any numerical value as this expression also has a
variable..
mathematical way, the word sum means addition and we
can write this as 3 plus 7. This is an expression and as it
has only numbers in it, it 's called a numerical expression
only numbers numerical expression now how do we use a
variable in its place, we can use it as x plus 7, where this x
can take any numerical value as this expression also has a
variable..
