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Simplifying (9x + 7y + -42)(x + -3y + -2z) = 0 Reorder the terms: (-42 + 9x + 7y)(x + -3y + -2z) = 0 Multiply (-42 + 9x + 7y) * (x + -3y + -2z) (-42(x + -3y + -2z) + 9x * (x + -3y + -2z) + 7y * (x + -3y + -2z)) = 0 ((x * -42 + -3y * -42 + -2z * -42) + 9x * (x + -3y + -2z) + 7y * (x + -3y + -2z)) = 0 ((-42x + 126y + 84z) + 9x * (x + -3y + -2z) + 7y * (x + -3y + -2z)) = 0 (-42x + 126y + 84z + (x * 9x + -3y * 9x + -2z * 9x) + 7y * (x + -3y + -2z)) = 0 Reorder the terms: (-42x + 126y + 84z + (-27xy + -18xz + 9x2) + 7y * (x + -3y + -2z)) = 0 (-42x + 126y + 84z + (-27xy + -18xz + 9x2) + 7y * (x + -3y + -2z)) = 0 (-42x + 126y + 84z + -27xy + -18xz + 9x2 + (x * 7y + -3y * 7y + -2z * 7y)) = 0 Reorder the terms: (-42x + 126y + 84z + -27xy + -18xz + 9x2 + (7xy + -14yz + -21y2)) = 0 (-42x + 126y + 84z + -27xy + -18xz + 9x2 + (7xy + -14yz + -21y2)) = 0 Reorder the terms: (-42x + -27xy + 7xy + -18xz + 9x2 + 126y + -14yz + -21y2 + 84z) = 0 Combine like terms: -27xy + 7xy = -20xy (-42x + -20xy + -18xz + 9x2 + 126y + -14yz + -21y2 + 84z) = 0 Solving -42x + -20xy + -18xz + 9x2 + 126y + -14yz + -21y2 + 84z = 0 Solving for variable 'x'. The solution to this equation could not be determined.
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