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Solve for jj.\newline7j14j+9=12-7j - 14j + 9 = -12\newlinej=j = __

Full solution

Q. Solve for jj.\newline7j14j+9=12-7j - 14j + 9 = -12\newlinej=j = __
  1. Combine like terms: Combine like terms, which are the terms with jj.\newline7j14j+9=12-7j - 14j + 9 = -12\newline(714)j+9=12(-7 - 14)j + 9 = -12\newline21j+9=12-21j + 9 = -12
  2. Isolate the term: Isolate the term with jj by subtracting 99 from both sides of the equation.\newline21j+99=129-21j + 9 - 9 = -12 - 9\newline21j=21-21j = -21
  3. Divide to solve: Divide both sides by 21-21 to solve for jj.21j/21=21/21-21j / -21 = -21 / -21j=1j = 1

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