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14 October, 11:03

If a + b = - 1a+b=-1a, plus, b, equals, minus, 1 and x + y + z = 2x+y+z=2x, plus, y, plus, z, equals, 2, what is 7a + 7b + 6z + 6x + 6y7a+7b+6z+6x+6y7, a, plus, 7, b, plus, 6, z, plus, 6, x, plus, 6, y?

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  1. 14 October, 11:27
    0
    5

    Step-by-step explanation:

    a+b=-1

    x+y+z=2

    7a+7b+6z+6x+6y=7 (a+b) + 6 (z+x+y) = 7 (-1) + 6 (2) = -7+12=5
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