Question

4xy-5y+7 if x=6 y=3 ​

Answer 1

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

           Given data:- $x=6$ and $y=3$

           To find:- Value of the expression $4xy-5y=7.$

          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.

• Step2 -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,

       By putting the value of $x$ and $y$

         $\Rightarrow4xy-5y=7\\\Rightarrow4(6)(3)-5(3)=7\\\Rightarrow 64.$

    Hence we will get the value $64.$

Answer 2

Given equation is

$4xy-5y+7$

The value of $x$ is given as $6$

The value of $y$ is given as $3$

Substitute the values of $x$ and $y$ in the given equation $4xy-5y+7$

We get the equation as,

$4(6)(3)-5(3)+7$

Multiply the terms in brackets using arithmetic operations.

$4(18)-15+7$

$72-15+7$

Add similar terms together.

$72+7-15$

$79-15$

$64$

Therefore, the final answer after substituting the values of $x$ and $y$ is  $64$