Question

A) 1+3/x = -2


b) 13/X-2 = 1


C) 10/x+3 = 1

obs.: quando eu coloco tipo 10/x+3 e 10 sobre x + 3

Answer 1

a)

1 + 3   =  - 2
      x

mmc = x

x + 3 = - 2x
    x        x

x + 3 = - 2x
x + 2x = - 3
3x = - 3
x = -3/3
x = - 1
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b)

  13    =  1
x - 2

13 = x - 2
13 + 2 = x
15 = x
x = 15
----------------------------------
c)

  10      =   1
x + 3

10 = 1.(x + 3)
10 = x + 3
10 - 3 = x
7 = x
x = 7
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