Matematika

Pertanyaan

Persamaan nilai mutlak
2x + 11 = | x - 21 |

- 2x + 11 = | x- 21 |

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    2x + 11 = | x - 21 |
    2x + 11 = x - 21
    2x - x = -21-11
    x =-32

    - 2x + 11 = | x- 21 |
    - 2x + 11 = x- 21
    -2x - x = -21 -11
    -3x = -32
    x = -32/-3
    =10 2/3








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