Solve
a
+
1
2
=
2
3
\displaystyle {a}+\frac{{1}}{{2}}=\frac{{2}}{{3}}
a
+
2
1
=
3
2
for
a
\displaystyle {a}
a
.
a
\displaystyle {a}
a
=
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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