Mathématiques

Question

calculer les expression suivant pour A=3+5-8-11 B=-5(-4)+(-8)-(+8). C=4×(-8)×(-5)×7×(-5). D= 13,6-[0,8-(-8+7,2)]. E=(8-16)÷4+5×(-3-7) F=(-3-5)×(-7,8-0,2)+3×(-1-(-11))

1 Réponse

  • A=3+5-8-11= 8-8-11 = -11

    B=-5(-4)+(-8)-(+8) = +20 -8-8 = 20-16 = 4

    C=4×(-8)×(-5)×7×(-5) = -36 x -35 x-5 = - 6300

    D= 13,6-[0,8-(-8+7,2)]= 13.6 -( 0.8 -(-1.2) )= 13.6 -(0.8+1.2) = 13.6 -(2) =13.6-2 = 11.6

    E=(8-16)÷4+5×(-3-7)   = ( -4) : 4+5x(-10)= -4 : 4+-50 = -4 : -46 = + 2/23

    F=(-3-5)×(-7,8-0,2)+3×(-1-(-11)) = (-8) x(-8) +3(-1+11) = 64 +3(10) = 64+30 =94

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