Matematika

Pertanyaan

jalan 5x+2=6x+21
2(5x+4)=5(3x-4)+3
3(3x-2)=2(x+4)

1 Jawaban

  • - 5x+2 =6x+21
    5x-6x=21-2
    -1x =19
    x = 19/-1
    x = -19

    - 2(5x+4)=5(3x-4)+3
    10x+8 =15x-20+3
    10x+8 =15x-17
    10x-15x = -17-8
    -5x = -25
    x = -25/-5
    x = 5

    - 3(3x-2) = 2(x+4)
    9x-6 = 2x+8
    9x-2x = 8+6
    11x = 14
    x = 14/11

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