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Evaluate the expression for z=−5z = -5.\newline−15+z=-15 + z = _____

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Full solution

Q. Evaluate the expression for z=−5z = -5.\newline−15+z=-15 + z = _____
  1. Write −15+z-15 + z: Write −15+z-15 + z after substituting z=−5z = -5.\newlineSubstitute −5-5 for zz in −15+z-15 + z.\newline−15+(−5)-15 + (-5)
  2. Substitute −5-5 for zz: Evaluate −15+(−5)-15 + (-5).\newline−15+(−5)-15 + (-5)\newline=−15−5= -15 - 5\newline=−20= -20

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