Question

If 3 – x = – 4, then x = ?

Answer 1

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

           Given data:- $3-x=-4.$

            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,

         $3-x=-4\\\Rightarrow -x+3=-4\\\Rightarrow -x=-4-3\\\Rightarrow -x=-7\\\Rightarrow x=7$

     Hence we will get the value $x=7.$

Answer 2

Given: The equation is$3-x=-4$.

We have to find the value of '$x$'.

• By using the concept of equation shifting, we are solving the above equation.
• For this, we will separate the variables on one side and the constant on another side.
• Then, we will simplify the equation.

We are solving in the following way:

We have,

The equation is$3-x=-4$

Now,

$\begin{array}{l}3-x=-4 \\\Rightarrow-x+3=-4 \\\Rightarrow-x=-4-3 \\\Rightarrow-x=-7 \\\Rightarrow x=7\end{array}$

Hence, the value of '$x$' will be$7$.