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-10+r=-1

−10+r=−1 -10+r=-1

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Q. −10+r=−1 -10+r=-1
  1. Add 1010 to isolate rr: Add 1010 to both sides to isolate rr.\newline−10+r+10=−1+10-10 + r + 10 = -1 + 10\newliner=9r = 9

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