3(1-2r)=-3(3r+4)

Solution for 3(1-2r)=-3(3r+4) equation:

3(1-2r)=-3(3r+4)

We simplify the equation to the form, which is simple to understand 
3(1-2r)=-3(3r+4)

Reorder the terms in parentheses
+(+3-6r)=-3*(3r+4)

Remove unnecessary parentheses
+3-6r=-3+*(+3r+4+)

Reorder the terms in parentheses
+3-6r=+(-9r-12)

Remove unnecessary parentheses
+3-6r=-9r-12

We move all terms containing r to the left and all other terms to the right. 
-6r+9r=-12-3

We simplify left and right side of the equation. 
+3r=-15

We divide both sides of the equation by 3 to get r. 
r=-5