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a/2-1/2=-4
We simplify the equation to the form, which is simple to understand
a/2-1/2=-4
Simplifying:
+ 0.5a-1/2=-4
Simplifying:
+ 0.5a-0.5=-4
We move all terms containing a to the left and all other terms to the right.
+ 0.5a=-4 + 0.5
We simplify left and right side of the equation.
+ 0.5a=-3.5
We divide both sides of the equation by 0.5 to get a.
a=-7
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