Question

iii. The value of z of the expression z+9=21 is​

Answer 1

As per the data given in the question,

We have to determine the value of "z" in the given expression,

From the question,

It is given that,

$z+9=21$

So, for solving the value,

We will solve it by separating the like terms at one side.

So, we will shift 9 from LHS of equation to RHS of equation,

We will get it as,

$z+9=21\\=>z = 21-9\\=>z = 12$

Hence, value of "z" in the given expression will be 12.

Answer 2

• As per the data given in the question, we have to find the value of the

expression.

           Given data:- $z+9=21.$

           To find:- Value of the expression.

           Solution:-

• Here, we will use the below following steps to find a solution using the transposition method:

• Step 1:- we will Identify the variables and constants in the given simple equation.

• Step 2:-then we Simplify the equation in LHS and RHS.

• Step 3:- Transpose or shift the term on the other side to solve the equation further simplest.

• Step 4:- Simplify the equation using arithmetic operation as required that is mentioned in rule 1 or rule 2 of linear equations.

• Step 5:- Then the result will be the solution for the given linear equation. By using the transposition method. we get,

            $\begin{array}{l}z+9=21 \\=>z=21-9 \\=>z=12\end{array}$

       Hence we will get the value of $z=12.$