Matematika

Pertanyaan

tentukan nilai variabel
1. 4+P=3
2. Q-2=6
3. 9-3r=6
4. 4x-3=3x+5
5. 3x+13=5x
tolong di bantu ya

2 Jawaban

  • 1) 4+P=3
    P = 3-4
    P = -1

    2) Q-2=6
    Q = 6+2
    Q = 8

    3) 9-3r=6
    9-6 = 3r
    3 = 3r
    3/3 = r
    1 = r

    4) 4x-3=3x+5
    4x-3x = 5+3
    x = 8

    5) 3x+13=5x
    13 = 5x-3x
    13 = 2x
    13/2 = x
    6,5 = x

    jadikan yg terbaik ya kalau puas
  • 1.)
    4 + P = 3
    P = 3 - 4
    P = (-1)

    2.) Q - 2 = 6
    Q = 6 + 2
    Q = 8

    3.) 9 - 3r = 6
    -3r = 6 - 9
    -3r = - 3
    r = -3 ÷ -3
    r = 1

    4.) 4x - 3 = 3x + 5
    4x - 3x = 5 + 3
    x = 8

    5.) 3x + 13 = 5x
    3x - 5x = - 13
    - 2x = - 13
    x = - 13 ÷ - 2
    x = 6,5

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