Let’s start by rewriting the equation:
2x + 5 = 25
We need to isolate the variable now. To do so, we have to get rid of the 5. The inverse operation of addition is subtraction, so we would subtract 5 from both sides:
2x + (5 - 5) = 25 - 5
Now let’s simplify to make it easier:
2x = 20
Given 2 is a coefficient, we divide both sides by 2 so that x is by itself:
2x / 2 = x
20 / 2 = 10
That leaves us with our answer:
x = 10