Question

mathematics class 8 please tell me I will mark you as a brainleast​

Answer 1

1 . 4x -2= 6

4x = 6+2

x = 8/4

x = 2

2. 3x/5 = -15

3x = -15*5

3x = -60

x = - 60 /3

x = - 20

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Answer 2

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

              Given data:-

              $1)4x-2=6\\2)\frac{3x}{5} =-15\\3)-3x-4=-12x$

              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.  

        we get,

                  $1)4x-2=6\\=>4x=6+2\\=>4x=8\\=>x=\frac{8}{4} \\=>x=2.$

                  $2)\frac{3x}{5} =-15\\=>3x=-15\times5\\=>3x=-75\\=>x=-\frac{75}{3} \\=>x=-25$

                 $3)-3x-4=-12x\\=>-3 x=-12 x+4\\=>-3x+12x=4\\=>9x=4\\=>x=\frac{4}{9}$

      Hence we will get the value $(1)x=2,(2)x=-25,(3)x=\frac{4}{9} .$