Respuesta :

Nayefx

Answer:

A)x=3/2 y=½

Step-by-step explanation:

to understand this

you need to know about:

  • system of linear equation
  • PEMDAS

let's solve:

  • since y is equal to both equation therefore we can substitute the value of y into the other equation
  1. [tex] \sf substitute \: the \: value \: of \: y : \\ \sf - x + 2 = 3x - 4[/tex]
  2. [tex] \sf add \: x \: to \: both \: sides : \\ \sf - x + x + 2 = 3x + x - 4 \\ \sf 4x - 4 = 2[/tex]
  3. [tex] \sf add \: 4 \: to \: both \: sides : \\ \sf xx - 4 + 4 = 2 + 4 \\ 4x = 6[/tex]
  4. [tex] \sf divide \: both \: sides \: by \: 4 : \\ \frac{4x}{4} = \frac{6}{4} \\ x = \frac{3}{2} [/tex]

let's figure out y

  1. substitute the got value of x into the second equation: y=3*3/2 -4
  2. simplify multiplication:9/2 -4
  3. simplify division:4.5-4
  4. substract:0.5 alternate form:y=½
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