October 2018 1 41 Report
Coloca los paréntesis necesarios para que cada expresión dé el resultado que se indica
a) 5 + 3·9 + 7 ==> 79 Solución: (5 + 3)9 + 7 = 8· 9 +7 = 79
b) 7 + 3·5 – 8 ==> 42
c) 7 + 3·5 + 2 ==> 52
d) 7 + 3·5 + 2 ==> 28
e) 4 + 7·4 – 3 ==> 11
f) 4 + 7·4 – 3 ==> 41
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