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Solve for zz.\newline19z+12=20z−819z + 12 = 20z - 8\newlinez=z = ____

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Full solution

Q. Solve for zz.\newline19z+12=20z−819z + 12 = 20z - 8\newlinez=z = ____
  1. Isolate zz by adding 88: Now, we'll isolate zz by adding 88 to both sides.\newline12+8=z−8+812 + 8 = z - 8 + 8\newline20=z20 = z
  2. Correcting the mistake: Oops, I made a mistake in the first step. I should have subtracted 20z20z instead of 19z19z. Let's correct that.\newline19z+12−20z=20z−8−20z19z + 12 - 20z = 20z - 8 - 20z\newline−z+12=−8-z + 12 = -8

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