What is the value of x in the equation 2.5 - 0.25 x = - 3?

You start by taking the 2.5 over to the other side. This is a positive number so when you take it over it will become a negative.

2.5-0.25x = - 3

-0.25x = - 3-2.5

-0.25x=-5.5

now - 0.25 is being multiplied to x, when you take it over to the other side, it becomes divide.

-0.25x = - 5.5

x = - 5.5/-0.25

x = 22