In 50-3x=8 why do we write -3 after subtracting both the sides with 50 while solving ​

see below

Step-by-step explanation:

50-3x=8

The first step is subtract 50 from each side

50-50-3x=8-50

-3x = -42

Then divide each side by -3

-3x/-3 = -42/-3

x = 14

Because -3x is remain after eliminate 50 on both sides.

Step-by-step explanation:

I. Solve 50 - 3x = 8

            50 - 3x = 8

   -50  +50 - 3x = 8 - 50 => {when 50 is +50}

                  -3x = -42 => {when -50 + 50 = 0 and -3x = -3x}

                      x = (-42)/(-3)

                      x = 14

Hope that help :)