0.3+0.3(20)=0.2(x+20)

Solution for 0.3+0.3(20)=0.2(x+20) equation:

0.3 + 0.3(20)=0.2(x+20)

We simplify the equation to the form, which is simple to understand 
0.3 + 0.3(20)=0.2(x+20)

Reorder the terms in parentheses
0.3+(+6)=0.2*(x+20)

Remove unnecessary parentheses
 + 0.3+6=0.2+*(+x+20+)

Reorder the terms in parentheses
0.3+6=+( + 0.2x+4)

Remove unnecessary parentheses
 + 0.3+6=0.2x+4

We move all terms containing x to the left and all other terms to the right. 
-0.2x=+4-0.3-6

We simplify left and right side of the equation. 
-0.2x=-2.3

We divide both sides of the equation by -00.2 to get x. 
x=11.5