April 2019 2 29 Report
Me pueden ayudar con estos problemas (?)

1) 13 + 18 - 17 - 13 - 15 + 21 - 34 + 7 =

2) ( -5 + 12 - 13 + 21 - 40 ) + ( 12 + 10 - 8 - 24 - 31 + 64 )=

3) ( -17 + 15 + 13 + 21 - 40 ) + ( 12 + 10 - 8 - 24 - 31 + 69 ) =

4) ( 6 - 12 - 13 + 21) + ( 5 - 17 + 44 - 31) =

5) - ( 71 - 10 + 39 - 28 ) - ( 15 + 10 - 13 + 24 ) + ( 11 - 17 + 19)
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