It is the equation of a line in 3-dimensional space.
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It equals 24.
89
144 9+7 = 16 and 9*16 = 144
144 9+7 = 16 and 9*16 = 144
2z + 9.75 - 7z = 5.15grouping terms, -5z = 5.15 - 9.75subtracting terms on right side, -5z = -4.6dividing both sides by -5, z = 0.92Verifying:Left Side = (2 x .92) + 9.75 - (7 x .92) = 1.84 + 9.75 - 6.44 = 11.69 - 6.44 = 5.15 = Right Side