Question

2. Which of the following is expression with one
variable?
a. X + y + z
b. y + 1
c. 1
d. x + y - 5​

Answer 1

Answer:

answer is C i think iam not be sure because in question there is one variable okay

Answer 2

Step-by-step explanation:

(b) y+1 is the equation with 1 variable

define of variable= A Variable is a symbol for a number we don't know yet. It is usually a letter like x or y. A number on its own is called a Constant.