Efetuar os cálculos:
A) (-46) + (-52) + (+31) - (-17) + (+63)=
B) (+5) + ( -13) + (+74) + (-44) - (-10)=
C) (-43) + (+59) - (+32) - (+11) - (-23)=
D) (+23) + (-41) - (+12) + (+15) + (-50)=
OBS: (+) x (+) = +
(-) x (-) = +
(+) x (-) = -
(-) x (+)= -
Monte a conta Pfv!
Obg!
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