а) 4+3=7 7
5+7=12 ---
12
б) 11-5=9 9
16-12=4 ---
4
в)1-7=6 6
1-9=8 ---
8
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а) 4+3=7 7
5+7=12 ---
12
б) 11-5=9 9
16-12=4 ---
4
в)1-7=6 6
1-9=8 ---
8