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21/2x+11/2x+1=12.50
We simplify the equation to the form, which is simple to understand
21/2x+11/2x+1=12.50
We move all terms containing x to the left and all other terms to the right.
+2x+2x=+12.5-1
We simplify left and right side of the equation.
+4x=+11.5
We divide both sides of the equation by 4 to get x.
x=2.875
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