September 2018 2 19 Report

prosze o rozwiazanie jak najszybciej

oblicz:

a

2/3+5/7=

5/6+4/9=

5/8+7/10=

b

2 3/4+1/3=

6 8/9+2 1/9=

2 7/9+3 5/6=

2 9/10+3 7/15

c

3/4-2/5=

5/8-2/5=

3/4-1/6=

1 5/6-3/8=

d

5 7/9-1 1/2=

8 1/6-2 2/5=

5 1/4-1 1/6=

8 3/4-2 7/9=


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