Răspuns :
Răspuns:
a)
13-6=10-6+3=4+3=7
17-9=10-9+7=1+7=8
17-8=10-8+7=2+7=9
b)
13-6=13-3-3=10-3=7
17-9=17-7-2=10-2=8
17-8=17-7-1=10-1=9
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Coroana pls
13 - 6 = 10 - 6 + 3 = 4 + 3 = 7
17 - 9 = 10 - 9 + 7 = 1 + 7 = 8
17 - 8 = 10 - 8 + 7 = 2 + 7 = 9
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13 - 6 = 13 - 4 - 2 = 9 - 2 = 7
17 - 9 = 17 - 5 - 4 = 12 - 4 = 8
17 - 8 = 17 - 5 - 3 = 12 - 3 = 9