Exercice 2: Calculer en indiquant les étapes intermédiaires : A = (-15) + (-26) - (-8) B = 4+ (-11) + (+9) + (-16) - (-17) C = (+16) + (-10) - (+ 3) - (+6) - (-5) D= (+11) - (-5) - (+6) + (-7) + (+8) Exercice 3 : Calculer en respectant la priorité des parenthèses : E = (4+2) - (11-19) F=-3,5+ [2,8 - (-4)] G=1-(3-2)-(5-4)-(7-6)- (9-8) H=2-[2-(11 - 23 ) ]- (-14) + 8 I = [(-14) - (+3) ] - [(-9) - (+7)] J = 12 - 18 - [14-19 + ( 22 - 34 - 16)]. préciser svp pr vendredi aider moi svp!!!​
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