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\frac{1}{7}\times \frac{1}{2}+\frac{1}{7}\left(-1\right)y-y\times \frac{1}{2}+y^{2}
Apply the distributive property by multiplying each term of \frac{1}{7}-y by each term of \frac{1}{2}-y.
\frac{1\times 1}{7\times 2}+\frac{1}{7}\left(-1\right)y-y\times \frac{1}{2}+y^{2}
Multiply \frac{1}{7} times \frac{1}{2} by multiplying numerator times numerator and denominator times denominator.
\frac{1}{14}+\frac{1}{7}\left(-1\right)y-y\times \frac{1}{2}+y^{2}
Do the multiplications in the fraction \frac{1\times 1}{7\times 2}.
\frac{1}{14}-\frac{1}{7}y-y\times \frac{1}{2}+y^{2}
Multiply \frac{1}{7} and -1 to get -\frac{1}{7}.
\frac{1}{14}-\frac{1}{7}y-\frac{1}{2}y+y^{2}
Multiply -1 and \frac{1}{2} to get -\frac{1}{2}.
\frac{1}{14}-\frac{9}{14}y+y^{2}
Combine -\frac{1}{7}y and -\frac{1}{2}y to get -\frac{9}{14}y.
\frac{1}{7}\times \frac{1}{2}+\frac{1}{7}\left(-1\right)y-y\times \frac{1}{2}+y^{2}
Apply the distributive property by multiplying each term of \frac{1}{7}-y by each term of \frac{1}{2}-y.
\frac{1\times 1}{7\times 2}+\frac{1}{7}\left(-1\right)y-y\times \frac{1}{2}+y^{2}
Multiply \frac{1}{7} times \frac{1}{2} by multiplying numerator times numerator and denominator times denominator.
\frac{1}{14}+\frac{1}{7}\left(-1\right)y-y\times \frac{1}{2}+y^{2}
Do the multiplications in the fraction \frac{1\times 1}{7\times 2}.
\frac{1}{14}-\frac{1}{7}y-y\times \frac{1}{2}+y^{2}
Multiply \frac{1}{7} and -1 to get -\frac{1}{7}.
\frac{1}{14}-\frac{1}{7}y-\frac{1}{2}y+y^{2}
Multiply -1 and \frac{1}{2} to get -\frac{1}{2}.
\frac{1}{14}-\frac{9}{14}y+y^{2}
Combine -\frac{1}{7}y and -\frac{1}{2}y to get -\frac{9}{14}y.