2(3)+3(1/2)=-4.5

Solution for 2(3)+3(1/2)=-4.5 equation:

2(3)+3(1/2)=-4.5

We simplify the equation to the form, which is simple to understand 
2(3)+3(1/2)=-4.5

Simplifying:
2*(3)+3*( + 0.5)=-4.5

Reorder the terms in parentheses
+(+6)+3*( + 0.5)=-4.5

Remove unnecessary parentheses
+6+3+*( + 0.5+)=-4.5

Reorder the terms in parentheses
+6+(+1.5)=-4.5

Remove unnecessary parentheses
+6+1.5=-4.5

We move all terms containing  to the left and all other terms to the right. 
0=-4.5-6-1.5

We simplify left and right side of the equation. 
0=-12

0=-12

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