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3 1/2+a=5 3/8
We simplify the equation to the form, which is simple to understand
31/2+a=53/8
We move all terms containing a to the left and all other terms to the right.
+1a=+6.625-15.5
We simplify left and right side of the equation.
+1a=-8.875
We divide both sides of the equation by 1 to get a.
a=-8.875
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