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-6+7.1a=-(8.9a+4)
We simplify the equation to the form, which is simple to understand
-6+7.1a=-(8.9a+4)
Remove unnecessary parentheses
-6+7.1a=-8.9a-4
We move all terms containing a to the left and all other terms to the right.
+7.1a+8.9a=-4+6
We simplify left and right side of the equation.
+16a=+2
We divide both sides of the equation by 16 to get a.
a=0.125
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