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3 December, 03:17

Solve: - x - 7 = - 2x - 11

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  1. 3 December, 03:26
    0
    -x-7=-2x-11

    +7 + 7

    -x = 2x-4

    +2x+2x

    x=-4
  2. 3 December, 03:46
    0
    Simplifying (7 + - 2x) (11 + - 2x) (x) = 0 Reorder the terms for easier multiplication: x (7 + - 2x) (11 + - 2x) = 0 Multiply (7 + - 2x) * (11 + - 2x) x (7 (11 + - 2x) + - 2x * (11 + - 2x)) = 0 x ((11 * 7 + - 2x * 7) + - 2x * (11 + - 2x)) = 0 x ((77 + - 14x) + - 2x * (11 + - 2x)) = 0 x (77 + - 14x + (11 * - 2x + - 2x * - 2x)) = 0 x (77 + - 14x + (-22x + 4x2)) = 0 Combine like terms: - 14x + - 22x = - 36x x (77 + - 36x + 4x2) = 0 (77 * x + - 36x * x + 4x2 * x) = 0 (77x + - 36x2 + 4x3) = 0 Solving 77x + - 36x2 + 4x3 = 0 Solving for variable 'x'. Factor out the Greatest Common Factor (GCF), 'x'. x (77 + - 36x + 4x2) = 0 Factor a trinomial. x ((7 + - 2x) (11 + - 2x)) = 0
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