Oblicz według wzoru.
21-19=21-11-8=10-8=2
37-18=
53-26=
42-15=
37-17-1=20-1=19
53-23-3=30-3=27
42-12-3=30-3=27
Mam nadzieję, że pomogłam :)
37 -18 = 37 -17 -1 = 20 -1 = 19
53 - 26 = 53 - 23 - 3= 30 -3 = 27
42 - 15 = 42 - 12 - 3 = 30 - 3 = 27
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37-17-1=20-1=19
53-23-3=30-3=27
42-12-3=30-3=27
Mam nadzieję, że pomogłam :)
37 -18 = 37 -17 -1 = 20 -1 = 19
53 - 26 = 53 - 23 - 3= 30 -3 = 27
42 - 15 = 42 - 12 - 3 = 30 - 3 = 27