michaelborne04pec1tt
michaelborne04pec1tt michaelborne04pec1tt
  • 24-10-2020
  • Mathematics
contestada

What is the solution of the proportion x-1/2 = x-4/5 ?

A. -2.33
B. 1
C. -1.86
D. -1

Respuesta :

altavistard
altavistard altavistard
  • 24-10-2020

Answer:

x = -1

Step-by-step explanation:

x-1/2 = x-4/5 is ambiguous (subject to misinterpretation).

It should be written with parentheses or with proper fractions:

  x - 1        x - 4

---------- = ----------

    2             5

Cross multiplying results in 5x - 5 = 2x - 8, or 3x = -3.  Then x = -1

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