resolva pelo método da adição esse sistema de equação 2x - 2y = 2 e 3x + 4y = 52?

Please enter comments
Please enter your name.
Please enter the correct email address.
You must agree before submitting.

Answers & Comments


  • 8 years ago

    2x-2y=2, (2)

    4x-4y=4

    3x+4y=52

    ---------------

    7x=56

    x=56/7

    x=8

    2x-2y=2

    2*8-2y=2

    16-2y=8

    -2y=8-16

    -2y=-8

    2y=8

    y=8/2

    y=4

  • 8 years ago

    2x - 2y = 2

    3x + 4y = 52

    ------------------------

    2x - 2y = 2 (x2)

    3x + 4y = 52

    ------------------------ agora somando...

    4x - 4y = 4

    3x + 4y = 52

    ___________

    7x=56

    x=56/7

    x=8

    substituindo agora o x

    3x + 4y = 52

    3(8)+ 4y = 52

    24+ 4y = 52

    4y = 52-24

    4y = 28

    y=28/4

    y=7

    x=8 e y=7

    espero ter ajudado, beijos

    Source(s): eu
  • sombra
    Lv 7
    8 years ago

    2x-2y=2

    3x+ 4y=52

    4x-4y=4...........(1)

    3x+ 4y=52.......(2)

    (1)+(2)

    4x+3x=4+52

    7x=56

    x=56/7

    x=8

    2x-2y=2

    2*8-2y=2

    16-2y=2

    2y=16-2

    2y=14

    y=7

  • Still have questions? Get your answers by asking now.
    0 votes Thanks 0
    More Questions From This User See All

    Recommended questions

    Helpful Social

    Copyright © 2024 1QUIZZ.COM - All rights reserved.