Integers
13 + (-21)
-8
1/4 - (-4/3)
1 2/3
-3/4 + (2 1/3)
3 1/12
9 x (-3) + 7
-11
2/5 x (-8/7)
-1 19/35
-3 8/15 - (-1 3/10)
-2 7/30
-4 x -6 / (-2)
-12
-7/10 / 2/5 + (-3/2)
1/4
1 3/5 x (-3 3/4)
-6
36 / (-6) x (-5) - 47
-17
-5/9 x 2/7 x (-9/2)
5/7
-4 1/2 x (-5/6) / (-1 8/13)
-2 9/28
14 x (-3) / (-2) + (-26)
-5
-2/3 x (-5/7) / 9/4
40/189
4 9/16 / (-6 3/7)
-196/741