2(5-8n)=-4(3+4n)

Solution for 2(5-8n)=-4(3+4n) equation:

2(5-8n)=-4(3+4n)

We simplify the equation to the form, which is simple to understand 
2(5-8n)=-4(3+4n)

Reorder the terms in parentheses
+(+10-16n)=-4*(3+4n)

Remove unnecessary parentheses
+10-16n=-4+*(+3+4n+)

Reorder the terms in parentheses
+10-16n=+(-12-16n)

Remove unnecessary parentheses
+10-16n=-12-16n

We move all terms containing n to the left and all other terms to the right. 
-16n+16n=-12-10

We simplify left and right side of the equation. 
n=-22

0=-22

The left and right sides are not equal, therefore there is no solution. This equation is invalid.