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

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

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

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

Simplifying terms in parentheses
3*(-3)=4*(3+3-5)

Simplifying terms in parentheses
3*(-3)=4*(+1)

Reorder the terms in parentheses
+(-9)=4*(+1)

Remove unnecessary parentheses
-9=+4+*(+1+)

Reorder the terms in parentheses
-9=+(+4)

Remove unnecessary parentheses
-9=+4

We move all terms containing  to the left and all other terms to the right. 
0=+4+9

We simplify left and right side of the equation. 
0=+13

0=13

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