(250000-25000)/15/12=x

Solution for (250000-25000)/15/12=x equation:

(250000-25000)/15/12=x

We simplify the equation to the form, which is simple to understand 
(250000-25000)/15/12=x

Simplifying:
(250000-25000)/1.25=x

Simplifying terms in parentheses
(+225000)/1.25=x

Reorder the terms in parentheses
(+180000)=x

Remove unnecessary parentheses
+180000=x

We move all terms containing x to the left and all other terms to the right. 
-1x=-180000

We simplify left and right side of the equation. 
-1x=-180000

We divide both sides of the equation by -01 to get x. 
x=180000