Question

EXERCÍCIO
5) Resolva as multiplicações:
a) (+1/7).(+2/5) =
b) (-4/3).(-2/7) =
c) (+1/4).(-3/5) =
d) (-4).(+1/5) =
6) Resolva as divisões:
a) (-7/9): (+5/2) = (-7/9). (+2/5) =
b) (-1/4): (-3/7) = (-1/4).(-7/3) =
c) (+3/5) : (-2) = (+3/5). -1/2) =
​

Answer 1

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