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100a-99+50a=50
We simplify the equation to the form, which is simple to understand
100a-99+50a=50
We move all terms containing a to the left and all other terms to the right.
+100a+50a=+50+99
We simplify left and right side of the equation.
+150a=+149
We divide both sides of the equation by 150 to get a.
a=0.993333333333
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