Question

What is the variable in this algebraic expression 8+6, 4d-2, 7r-15=6, 11+14=25

Answer 1

For this case we have that by definition, a variable is a symbol that can be replaced or that takes a numerical value in an equation or expression, mathematical in general.

Then we have the following options:

A) $8 + 6$

It is a sum of two real numbers. There are no variables.

B)$4d-2$

In this case the variable is "d"

C) $7r-15 = 6$

In this equation, the variable is represented by "r"

D) $11 + 14 = 25$

It is a sum of two real numbers. There are no variables.

Answer:

A) There are no variables

B) "d"

C) "r"

D) There are no variables