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1/7(a+9)=1/2(3-a)
We simplify the equation to the form, which is simple to understand
1/7(a+9)=1/2(3-a)
Reorder the terms in parentheses
+( + 0.14285714285714a+1.2857142857143)=0.5*(3-a)
Remove unnecessary parentheses
+ 0.14285714285714a+1.2857142857143=0.5+*(+3-a+)
Reorder the terms in parentheses
+ 0.14285714285714a+1.2857142857143=+(+1.5-0.5a)
Remove unnecessary parentheses
+ 0.14285714285714a+1.2857142857143=+1.5-0.5a
We move all terms containing a to the left and all other terms to the right.
+ 0.14285714285714a + 0.5a=+1.5-1.2857142857143
We simplify left and right side of the equation.
+ 0.64285714285714a=0.2142857142857
We divide both sides of the equation by 0.64285714285714 to get a.
a=0.33333333333331
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