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Solve for a. -a-21=-19 Answer: a=

Solve for a a .\newline−a−21=−19 -a-21=-19 \newlineAnswer: a= a=

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Full solution

Q. Solve for a a .\newline−a−21=−19 -a-21=-19 \newlineAnswer: a= a=
  1. Add 2121 to isolate: Add 2121 to both sides of the equation to isolate the term containing aa. −a−21+21=−19+21-a - 21 + 21 = -19 + 21
  2. Simplify both sides: Simplify both sides of the equation. −a=2-a = 2
  3. Multiply by −1-1: Multiply both sides by −1-1 to solve for aa.−a×−1=2×−1-a \times -1 = 2 \times -1a=−2a = -2

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