Answer with explanation:
→→An equation is said to be Literal, if real values are replaced by variables in the equation. There must be at-least two variables in the literal equation. For example:
x=2 + 3,in terms of Literal equation can be written as:
x =a + b,where,a=2,and b=3.
→First option is not a Literal equation as it contains , real values only.
→Second one is not a equation,it is a Polynomial.
→Third equation has only one variable.
→Fourth one is Literal equation, as it consist of two variables.
Option D: a x - b y = k
