math 3 3
2
⁢
x
+
y
-
z
(
x
,
y
)
(
a
b
)
a
b
c
d
1
x
3
+
x
3
=
1
x
3
+
x
3
1
+
5
2
(
a
b
)
(
a
b
)
1
+
5
2
Unrecognized element: mfraction; arguments were:
1
+
5
and
2
...
...
...
...
...
...
...
...
...
x
y
z
x
y
z
x
y
z
x
+
y
+
z
x
+
y
+
z
x
+
y
+
z
x
+
y
+
z
x
(
x
)
(
x
,
y
)
arg#1 ... arg#n
opening-fence
arg#1
sep#1
...
sep#(n-1)
arg#n
closing-fence
opening-fence
arg#1
closing-fence
opening-fence
closing-fence
x
+
y
+
z
(a+b)
a
+
b
[0,1)
0
1
f(x,y)
f
⁡
x
y
x
+
y
a
n
⁣
i
C
−
π
2