-25=-8(7n+2)-3(3+8n)

Solution for -25=-8(7n+2)-3(3+8n) equation:

-25=-8(7n+2)-3(3+8n)

We simplify the equation to the form, which is simple to understand 
-25=-8(7n+2)-3(3+8n)

Reorder the terms in parentheses
-25=+(-56n-16)-3*(3+8n)

Remove unnecessary parentheses
-25=-56n-16-3+*(+3+8n+)

Reorder the terms in parentheses
-25=-56n-16+(-9-24n)

Remove unnecessary parentheses
-25=-56n-16-9-24n

We move all terms containing n to the left and all other terms to the right. 
+56n+24n=-16-9+25

We simplify left and right side of the equation. 
+80n=0

We divide both sides of the equation by 80 to get n. 
n=0