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Home > Subjects > Mathematics > Level 2 > 2.6 Algebra > Subject content > Changing the subject of the formula

  • Subject: Mathematics
  • AS: 91261
  • Level: 2
  • Credits: 4
  • External

Mathematics 2.6 Apply algebraic methods in solving problems

Changing the subject of the formula

e.g.Make F the subject of the formula C = algebraic formula

           Answer:
The subject of this formula is C because it is the letter on its own.
Changing the subject of a formula is the same as solving an equation.
             C = algebraic formula
9C = 5(F – 32) Multiply each side by 9 to undo the dividing by 9 algebraic formulaC = F – 32 Divide each side by 5 to undo multiplying by 5 algebraic formulaC + 32 = F Add 32 to each side F = algebraic formulaC + 32

For more information see:
Changing the subject of a formula - higher
Literal equations
Solving literal equations
Rearranging equations.

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