Question

Which of the following expression does not involve a variable?

a. 2x+3 b. 5x+4 c. 5-7x d. 7x20-5

2​

Answer 1

Answer:

d. 7 × 20 - 5

Step-by-step explanation:

It is because of the following :

a) 2x +3

In this one, x is a variable .

b) 5x+4

In this one, x is a variable .

c) 5-7x

In this one, x is a variable .

d) 7× 20-5

In this one, x is the symbol of multiplication.

Hope it will help you.