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Simplifying (7v + -5z)(3 + -5a) = 0 Multiply (7v + -5z) * (3 + -5a) (7v * (3 + -5a) + -5z * (3 + -5a)) = 0 ((3 * 7v + -5a * 7v) + -5z * (3 + -5a)) = 0 Reorder the terms: ((-35av + 21v) + -5z * (3 + -5a)) = 0 ((-35av + 21v) + -5z * (3 + -5a)) = 0 (-35av + 21v + (3 * -5z + -5a * -5z)) = 0 Reorder the terms: (-35av + 21v + (25az + -15z)) = 0 (-35av + 21v + (25az + -15z)) = 0 Reorder the terms: (-35av + 25az + 21v + -15z) = 0 (-35av + 25az + 21v + -15z) = 0 Solving -35av + 25az + 21v + -15z = 0 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-21v' to each side of the equation. -35av + 25az + 21v + -21v + -15z = 0 + -21v Combine like terms: 21v + -21v = 0 -35av + 25az + 0 + -15z = 0 + -21v -35av + 25az + -15z = 0 + -21v Remove the zero: -35av + 25az + -15z = -21v Add '15z' to each side of the equation. -35av + 25az + -15z + 15z = -21v + 15z Combine like terms: -15z + 15z = 0 -35av + 25az + 0 = -21v + 15z -35av + 25az = -21v + 15z Reorder the terms: -35av + 25az + 21v + -15z = -21v + 21v + 15z + -15z Combine like terms: -21v + 21v = 0 -35av + 25az + 21v + -15z = 0 + 15z + -15z -35av + 25az + 21v + -15z = 15z + -15z Combine like terms: 15z + -15z = 0 -35av + 25az + 21v + -15z = 0 The solution to this equation could not be determined.
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