Question

solve this equation
3(n-5)=21​

Answer 1

Answer:

n=12

Step-by-step explanation:

3(n-5)=21

3n-15=21(15 will go opposite side and becomes +15)

3n=21+15

3n=36

n=36/3

n=12

Answer 2

• We have to evaluate the above expression by using the given data.

              Given data:- $3(n-5)=21.$

              To find:- Value of the expression.

              Solution:-

• Here we will use the transposition method.

• Transposition is one of the linear equations.

• To solve the transposition method we wi.ll Identify the variables and constants.

• Then we Simplify the equation in LHS and RHS.

• Now Simplify the equation using arithmetic operations.

        By using the transposition method.

        we get,

                  $3(n-5)=21\\=>3n-15=21\\=>3n=21+15\\=>3n=36\\=>n=\frac{36}{3} \\=>n=12.$

       Hence we will get the value $n=12.$