Mathématiques

Question

a)-3(2+x)= 1-5x

b)4-7(2-x)=5-4x

2 Réponse

  • a)-3(2+x)= 1-5x
    -6-3x=1-5x
    2x=7
    x=3,5

    b)4-7(2-x)=5-4x

    4-14+7x=5-4x
    11x=15
    x=15/11
  • a)-3(2+x)= 1-5x
    -6 -3x = 1-5x
    -3x +5x = 1 +6
    2x = 7
    x =7/2

    b)4-7(2-x)=5-4x

    4 -14 +7x = 5-4x
    7x +4x = 5 -4 +14
    11x = 15
    x =15/11

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