Solve
n
−
1
2
=
2
5
\displaystyle {n}-\frac{{1}}{{2}}=\frac{{2}}{{5}}
n
−
2
1
=
5
2
for
n
\displaystyle {n}
n
.
n
\displaystyle {n}
n
=
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\displaystyle
Enter your answer as a reduced fraction (like 5/3, not 10/6) or as an integer (like 4 or -2)
Do not enter mixed numbers
Enter DNE for Does Not Exist, oo for Infinity