.2a+.8(300-a)=.45(300)

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Solution for .2a+.8(300-a)=.45(300) equation:


.2a+.8(300-a)=.45(300)

We simplify the equation to the form, which is simple to understand 
.2a+.8(300-a)=.45(300)

Reorder the terms in parentheses
.2a+(+240-0.8a)=.45*(300)

Remove unnecessary parentheses
+.2a+240-0.8a=+.45+*(+300+)

Reorder the terms in parentheses
.2a+240-0.8a=+(+135)

Remove unnecessary parentheses
+.2a+240-0.8a=+135

We move all terms containing a to the left and all other terms to the right. 
 + 0.2a-0.8a=+135-240

We simplify left and right side of the equation. 
-0.6a=-105

We divide both sides of the equation by -0.6 to get a. 
a=175

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