Number 1 is not among
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2)
[tex] 11\frac{3}{7} + 9 \frac{2}{3} = [/tex]
3)
[tex]12 \frac{5}{9} - 10 \frac{5}{7} = [/tex]
4)
[tex]2 \frac{1}{2} \times 4 \frac{1}{4} [/tex]
5)
[tex]5 + 6 \div 2 - 9 + 9 - 7 \times 3 + 7[/tex]
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