January 2020 1 70 Report
Ajuda com frações.

a - 2/3 - 1/2 - 5 =

b- 2 - (-2/3 - 1/4) =

c- (1/4 x 3/5) x 2/7=

d- (5 - 1/3) elevado a 2 + (3 + 1/2) elevado a 2
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