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ThayOliver123
@ThayOliver123
December 2019
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Efetue as multiplicações
a) -4/5.-7/4=
b) +4/9.-16/81=
c) +5/8.-4/3=
d) +4/5.0=
e) (+3).-3/9.+18/6
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odetenasciment
A) -4/5 . -7/4 = (Fica positivo pq - por - = +) 28/20 (dividindo por 2) = 14/10 ( dividindo por 2 de novo) = 7/5
b) + 4/9 . -16/81 = (fica negativo pq + por - = -) -64/729
c) +5/8 . -4/3 = (fica negativo pq + por - = -) - 20/24 (dividindo por 4) = -5/6
d) +4/5 . 0 = 0
e) (+3) . -3/9 . +18/6 = ( + por - = -, - por + = -) - 162/54 = -3
16 votes
Thanks 27
3478elc
a) -4/5.-7/4= + 7/5
b) +4/9.-16/81= + 64/729
c) +5/8.-4/3= - 5/6
d) +4/5.0= 0
e) (+3).-3/9.+18/6 = - 1 + 18/6 = (-6+18) = +12/6 ==+> + 2
5 votes
Thanks 9
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b) + 4/9 . -16/81 = (fica negativo pq + por - = -) -64/729
c) +5/8 . -4/3 = (fica negativo pq + por - = -) - 20/24 (dividindo por 4) = -5/6
d) +4/5 . 0 = 0
e) (+3) . -3/9 . +18/6 = ( + por - = -, - por + = -) - 162/54 = -3
a) -4/5.-7/4= + 7/5
b) +4/9.-16/81= + 64/729
c) +5/8.-4/3= - 5/6
d) +4/5.0= 0
e) (+3).-3/9.+18/6 = - 1 + 18/6 = (-6+18) = +12/6 ==+> + 2