haii3
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  • 09-01-2017
  • Mathematics
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Аноним Аноним
  • 09-01-2017

#1

(5 + 8 ) - 4

= 13      -       4

---------      ---------

= 9

-------


#4

(7+1) x 8 = 8 x 8 = 64

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