SOLUTION: 8x - 9x + 2(-3s - 4) if x=-8 -4(4 + 7y) + 5 + 3y if y=2 5(-m - 3) + 4m - 10 if m=-5 -1 + 9(4d - 2) - 6d if d=-1 6 - 2y - 6(-3y + 7) if y=3 -8(9 + 2k) + 8k + k if k=6

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