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Simplifying 4z = 28 + -0.25(4 + -16z) 4z = 28 + (4 * -0.25 + -16z * -0.25) 4z = 28 + (-1 + 4z) Combine like terms: 28 + -1 = 27 4z = 27 + 4z Add '-4z' to each side of the equation. 4z + -4z = 27 + 4z + -4z Combine like terms: 4z + -4z = 0 0 = 27 + 4z + -4z Combine like terms: 4z + -4z = 0 0 = 27 + 0 0 = 27 Solving 0 = 27 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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