A)(7/8).(+3/2).(-4/3)= B) (-0,5). (-16/25) . (-1/8)= C) (-9) . (-8/3) . (+7/16)= D) (-6) . (+2/3) . .... Pergunta de ideia deAliceMB

AliceMB @AliceMB

August 2019 1 73 Report

A)(7/8).(+3/2).(-4/3)=
B) (-0,5). (-16/25) . (-1/8)=
C) (-9) . (-8/3) . (+7/16)=
D) (-6) . (+2/3) . (-2/3) . (+6)=

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B0Aventura

Multiplicação:

(+) vezes (+) = (+)

(+) vezes (-) = (-)

(-) vezes (-) = (+)

$\frac{7}{8} ~.~\frac{3}{2} ~.~-\frac{4}{3}= -\frac{84}{48}=-\frac{7}{4}$

$(-0,5)~.~(-\frac{16}{25})~.~-\frac{1}{8}=\\\\obs.:-0,5=-\frac{1}{2}\\\\-\frac{1}{2} ~.~-\frac{16}{25}~.~-\frac{1}{8}=-\frac{16}{400}=-\frac{1}{25}$

$-9~.~-\frac{8}{3}~ .~\frac{7}{16}~ =-\frac{9}{1}~ ~.~-\frac{8}{3}~ .~\frac{7}{16}~ =+\frac{504}{48}=\frac{63}{1}~ =63$

$(-\frac{6}{1})~.~\frac{2}{3}~.~(-\frac{2}{3})~.~\frac{6}{1}~ =+\frac{144}{9}=\frac{16}{1}=16$

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