Matematika

Pertanyaan

No.1. -2|×-3|+2=-2
No.2. 2x-2<4
No.3. 2|x-2|>3|x-2|-2
No.4. 2x+y=4
X-2y=6

1 Jawaban

  • no 1.
    -2[x-3]+2= -2
    -2x + 6 = -2
    -2x = -2 - 6
    -2x = -8
    x =-8/-2
    x =4

    no2
    2x-2 < 4
    2x < 4+2
    2x < 6
    x < 6/2
    x < 3

    no 3
    2[x-2] >3[x-2]-2
    2x-4. > 3x -6 -2
    2x- 4. > 3x-8
    2x-3x > -8 + 4
    -x > -4
    x > 4

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