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0.05a + 0.1(a+3) + 0.25(a-3)=14.55
We simplify the equation to the form, which is simple to understand
0.05a + 0.1(a+3) + 0.25(a-3)=14.55
Reorder the terms in parentheses
0.05a+( + 0.1a + 0.3) + 0.25*(a-3)=14.55
Remove unnecessary parentheses
+ 0.05a + 0.1a + 0.3 + 0.25+*(+a-3+)=+14.55
Reorder the terms in parentheses
0.05a + 0.1a + 0.3+( + 0.25a-0.75)=14.55
Remove unnecessary parentheses
+ 0.05a + 0.1a + 0.3 + 0.25a-0.75=+14.55
We move all terms containing a to the left and all other terms to the right.
+ 0.05a + 0.1a + 0.25a=+14.55-0.3 + 0.75
We simplify left and right side of the equation.
+ 0.4a=+15
We divide both sides of the equation by 0.4 to get a.
a=37.5
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