Justify each step. 2x-5=-20 2x=-15 X=-15/2

This is a linear equation, and it is solved for finding the value of x.

2x - 5 = - 20

now simple number - 5 goes to the other side of equation and turns into + 5, then the equation becomes

2x = - 20 + 5

now we get 2x = - 15

because - 20 + 5 = - 15, greater number is 20 then 5 and 20 is with - sign.

the next step is x = - 15/2

in 2x, 2 is multiplying with x when it goes to the other side of equation 2 will be divided with - 15, that's why we get

x = - 15/2

which is the value of x