1.a) 2 1/6
-------------
1 4/9
b) 1/2 + 1/3
-------------
1/2
c) 1 5/12
------------
1/2 - 1/3
d) 2 - 1/3
--------------
2-1/2
e) 3/4 + 1/8
--------------
3/4 - 1/8
f) 1/2 - 1 2/5
--------------
1/2 - 1 1/5
g) 2 1/4 - 3 1/2
----------------
1/8 + 1/2
h) 3 1/2 - 2 * 3/4
-------------------
2 1/2 * 2/5 - 2
2. a) x= 1
--------------
1+1/1
y= 1
-------------
1 + 1
---------
1 + 1/1
b) x= 1+ 1
-----------
2 + 1/2
y= 1 + 1
----------------
2 + 1
----------
2 + 1/2
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