Sagot :
Bonjour,
a) -2/3 x 4/5
= (-2*4)/(3*5) = -8/15
b) -2/3 x (-4/5)=
(-2*-4)/(3*5) = 8/-20 = 4/-10 = 2/-5
c) 2/7 x (-3/5) =
(2*-7) / (7*5) = -14 /35 = -2/5
d) -9 x 3/5=
(-9*3)/5 = -27/5
Bonjour,
a) -2/3 x 4/5
= (-2*4)/(3*5) = -8/15
b) -2/3 x (-4/5)=
(-2*-4)/(3*5) = 8/-20 = 4/-10 = 2/-5
c) 2/7 x (-3/5) =
(2*-7) / (7*5) = -14 /35 = -2/5
d) -9 x 3/5=
(-9*3)/5 = -27/5