Matematika

Pertanyaan

tlg ya besok dikumpulkan
tlg ya besok dikumpulkan

1 Jawaban

  • 1) 4x - 5 = 3
    4x = 3 + 5
    4x = 8
    x = 2 ( B )

    2) 3x - 4 = 32 + 7x
    3x - 7x = 32 + 4
    - 4x = 36
    x = - 9 ( A )

    3) ( x-1 / 2) - 2 = 2
    ( x-1 / 2) = 2 + 2
    ( x-1 / 2) = 4
    x - 1 = 4 (2)
    x - 1 = 8
    x = 8 + 1
    x = 9 ( D )

    4) ⅓x + 2/5 x = 22
    5/15 x + 6/15 x = 22
    11/15 x = 22
    x = 22 ÷ 11/15
    x = 22 × 15/11
    x = 30 ( D )

    5) ( x-3 / 2) = ( 2x-4 / 3 )
    3(x - 3) = 2(2x - 4)
    3x - 9 = 4x - 8
    3x - 4x = - 8 + 9
    - x = 1
    x = - 1 ( B )