Effectué les calculs suivants en détaillant tout les étapes du calculs 57-24+16= .... b)=4,5+1,5×4=.... c)=17-2×(8-4)= ... d=(13-5)×(4+6)=.... E=45÷9×(12-6)=......
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a) 57-24+16 = 33+16 = 49
b) 4,5+1.5x4 = 4,5+(1.5x4) = 4.5+6 = 10.5
c) 17-2x(8-4) = 17-[2x(8-4)] = 17-(2x4) = 17 - 8 = 9
d) (13-5)x(4+6) = 8x(4+6) = 8x10 = 80
e) 45/9x(12-6) = (45/9)x(12-6)= (45/9)x6 = 5x6 = 30