Evaluate
y_{7} = \frac{1}{2} = 0.5
Factor
\frac{2y_{7}+1}{2}
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y_{7}+\frac{1}{2}
Add \frac{1}{2} and 0 to get \frac{1}{2}.
\frac{2y_{7}+1}{2}
Factor out \frac{1}{2}.
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