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(2/3)a-5+(8/9)a=-18
We simplify the equation to the form, which is simple to understand
(2/3)a-5+(8/9)a=-18
Simplifying:
( + 0.666666666667)*a-5+(8/9)*a=-18
Simplifying:
( + 0.666666666667)*a-5+( + 0.888888888889)*a=-18
Reorder the terms in parentheses
( + 0.666666666667a)-5+( + 0.888888888889)*a=-18
Remove unnecessary parentheses
+ 0.666666666667a-5+( + 0.888888888889)*a=-18
Reorder the terms in parentheses
+ 0.666666666667a-5+( + 0.888888888889a)=-18
Remove unnecessary parentheses
+ 0.666666666667a-5 + 0.888888888889a=-18
We move all terms containing a to the left and all other terms to the right.
+ 0.666666666667a + 0.888888888889a=-18+5
We simplify left and right side of the equation.
+1.55555555556a=-13
We divide both sides of the equation by 1.55555555556 to get a.
a=-8.35714285714
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