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2 (-a-8) 15 < 9=0
We simplify the equation to the form, which is simple to understand
2(-a-8)15<9=0
Reorder the terms in parentheses
+(-2a-16)*15<9=0
Reorder the terms in parentheses
+(-30a-240)=0
Remove unnecessary parentheses
-30a-240=0
We move all terms containing a to the left and all other terms to the right.
-30a=0+240
We simplify left and right side of the equation.
-30a=+240
We divide both sides of the equation by -30 to get a.
a=-8
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