Addition
Subtraction
add/sub
mixes
50

2/3 + 1/2

1 1/6 or 7/6

50

2/3 - 1/2

1/6

50

2/3 + 4/6 - 3/6

5/6

50

4/7 x 6/9

24/63

100

4/5  + 7/12

1 23/60 or 83/60

100

4/5 -7/12

13/60

100

4/5 + 4/10 -2/10

1 or 10/10

100

4/5 x 7/8

28/40

150

2/3 + 4/6 +2/8

1 14/24 or 38/24

150

2/3 - 4/6 - 2/8

-2/8

150

2/3 + 4/6 - 2/8

1 2/24 or 26/24

150

2/3 x 4/6

8/18

200

9/12 + 2/6

1 1/12 or 13/12

200

9/12 - 2/6

5/12

200

9/12 + 2/6 - 5/12

8/12

200

9/12 x 2/6

18/72

250

1/2 + 2/4 + 3/6 + 4/8

2 or 4/2

250

1/2 - 2/4 - 3/6

-1/2

250

1/2 + 2/4 - 3/6 + 4/8

1

250

1/2 x 4/8

4/16 or 1/4

M
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