Question

please answer above question answer can be a or d​

Answer 1

Answer:

Option (d)

Step-by-step explanation:

Solution :-

a) Given equation is x+4 = 21

=> x+4-21 = 0

=> x-17 = 0

The degree = 1

The variable = x

So, This is the linear equation in one variable.

b) Given equation is 2x+4 = x

=> 2x-x = 4

=> x = 4

=> x-4 = 0

The degree = 1

The variable = x

So, This is the linear equation in one variable.

c) Given equation is 3t = 1

=> 3t-1 = 0

The degree = 1

The variable = t

So, This is the linear equation in one variable.

d) Given equation is x+3 = y

=> x+3-y = 0

=> x-y+3 = 0

The degree = 1

The variables = x and y

So, This is the linear equation in two variables.

It is not a linear equation in one variable.

Answer :-

x+3 = y is not a linear equation in one variable.

Used formulae:-

→ An equation of the degree is 1 is called a linear equation.

→ A linear equation has only one variable is called A linear equation in one variable.

→ The standard form of a linear equation in one variable is ax+b = 0.

• x is the variable
• a and b are the real numbers