Matematika

Pertanyaan

persamaan linier variabel

1). 5a+3=28
2). 7b + 5 = 61
3). 6a + 1 = 49
4). 4a + 11= 39
5). 4a + 5 =2a + 10



pake cara ya kaka

2 Jawaban

  • 1.5a + 3 = 28
    5a = 28-3
    5a = 25
    a = 25/5
    a = 5

    2.7b + 5 = 61
    7b = 61 - 5
    7b = 56
    b = 56/7
    b = 8

    3.6a + 1 = 49
    6a = 49-1
    6a = 48
    a = 48/6
    a = 8

    4.4a + 11 = 23
    4a = 39-11
    4a = 28
    a = 28/4
    a = 7

    5.4a + 5 = 2a + 10
    4a - 2a = 10-5
    2a = 5
    a = 5/2
    a = 2,5
    Maaf kalo ada yg salah :)
  • kek gitu yah kalo gak salah
    Gambar lampiran jawaban yusufarr4

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