3(1+n)-4(n+3)=-5

Solution for 3(1+n)-4(n+3)=-5 equation:

3(1+n)-4(n+3)=-5

We simplify the equation to the form, which is simple to understand 
3(1+n)-4(n+3)=-5

Reorder the terms in parentheses
+(+3+3n)-4*(n+3)=-5

Remove unnecessary parentheses
+3+3n-4+*(+n+3+)=-5

Reorder the terms in parentheses
+3+3n+(-4n-12)=-5

Remove unnecessary parentheses
+3+3n-4n-12=-5

We move all terms containing n to the left and all other terms to the right. 
+3n-4n=-5-3+12

We simplify left and right side of the equation. 
-1n=+4

We divide both sides of the equation by -1 to get n. 
n=-4