.2(x+4)-.45(x+9)=12

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Solution for .2(x+4)-.45(x+9)=12 equation:


.2(x+4)-.45(x+9)=12

We simplify the equation to the form, which is simple to understand 
.2(x+4)-.45(x+9)=12

Reorder the terms in parentheses
+( + 0.2x + 0.8)-.45*(x+9)=12

Remove unnecessary parentheses
 + 0.2x + 0.8-.45+*(+x+9+)=+12

Reorder the terms in parentheses
 + 0.2x + 0.8+(-0.45x-4.05)=12

Remove unnecessary parentheses
 + 0.2x + 0.8-0.45x-4.05=+12

We move all terms containing x to the left and all other terms to the right. 
 + 0.2x-0.45x=+12-0.8+4.05

We simplify left and right side of the equation. 
-0.25x=+15.25

We divide both sides of the equation by -0.25 to get x. 
x=-61

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