Mathématiques

Question

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J'ai Ps Compris
?????? J'ai Ps Compris

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  • a = 8/3 - 5/3 :20/21

    a = 8/3  -5/3 x 21/20

    a = 8/3 -5/3 x 3*7/5*4

    a = 8/3 -7/4

    a = 32/12 -21/12

    a = 11/12


    b =(2+2/3) : (4/5-2/3)

    b =(6/3+2/3) : (12/15-10/15)

    b = 8/3 : 2/15

    b = 8/3 x 15/2

    b =2*4/3 x 3*5/2

    b =20

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