2(x-3+3*4-x)=5

Solution for 2(x-3+3*4-x)=5 equation:

2(x-3+3*4-x)=5

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

Simplifying:
2*(x-3+12-x)=5

Simplifying terms in parentheses
2*(+9)=5

Reorder the terms in parentheses
+(+18)=5

Remove unnecessary parentheses
+180x=+5

We move all terms containing x to the left and all other terms to the right. 
0x=+5-18

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

0=-13

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