Question

Resolva as equações 2
H) X-39=79
I) 10=X+8
J) 15=X+20
K) 4=x-10
L) 7=X+8
M) 0=X+12
N) -3=X+10

Answer 1

Resposta:

H) x - 39 = 79

    x = 79 + 39

    x = 118

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I) 10 = x - 20

  -x = -20 - 10

  -x = -30 . (-1)

   x = 30

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J) 15 = x + 20

   -x = 20 - 15

   -x = 5 . (-1)

    x = -5    

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K) 4 = x - 10

  -x = -10 -4

  -x = -14 . (-1)

   x = 14

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L) 7 = x + 8

  -x = 8 - 7

  -x = 1 . (-1)

   x = -1

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M) 0 = x + 12

    -x =  12 - 0

    -x = 12 . (-1)

     x =  -12

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N) -3 = x + 10

    -x = 10 + 3

   -x = 13 . (-1)

    x = -13