Odpowiedź:
[tex]10 \times 10 + 10 - 10 \times 10 = 100 + 10 - 10 \times 10 = 100 + 10 - 100 = 110 - 100 = 10[/tex]
[tex]2 \times 1 + 3 - 7 \times 10 = 2 + 3 - 7 \times 10 = 2 + 3 - 70 = 5 - 70 = -65[/tex]
[tex]4 \times 3 + 2 - 1 \times 5 = 12 + 2 - 1 \times 5 = 12 + 2 - 5 = 14 - 5 = 9[/tex]
[tex]12 \times 12 + 12 - 12 \times 12 = 144 + 12 - 12 \times 12 = 144 + 12 - 144 = 156 - 144 = 12[/tex]
