Question

5. In equation ax + b = 0, the value of x is:​

Answer 1

The equation is an algebraic equation and it contains only one variable. The variable is x. The variable acts as a constant. So we solve for the variable x.

Consider given equation

⇒ax+b=0

⇒ax+b=0

Where x is the variable a is the coefficient of x and b is the constant term

Rearrange the equation by subtracting b from both sides of the equation, then

⇒ax+b−b=0−b

⇒ax+b−b=0−b

On subtracting we get

⇒ax+0=−b

⇒ax+0=−b

So it is written as

⇒ax=−b

⇒ax=−b

To solve the above equation for x, divide both side by a, then

⇒axa=−ba

⇒axa=−ba

On rewriting we have

⇒aa.x=−ba

⇒aa.x=−ba

As we know the value of aa

aa

is 1

∴x=−ba

∴x=−ba

Hence, by solving the value of variable x in the linear equation ax+b=0

ax+b=0

is −ba

−ba

.

Hence we have solved for x and obtained the solution.

Therefore x=−ba

x=−ba

So, the correct answer is “ x=−ba

x=−ba

”.

Answer 2

Answer:

x = -ba.

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