Home > Subjects > Mathematics > Level 1 - CAS Mathematics > 1.1 Algebra (AS90799) > Subject content > Rearranging formulae
- Subject: Mathematics
- AS: 90799
- Level: 1
- Credits: 4
- External
CAS Mathematics 1.1 Demonstrate an understanding of straightforward algebraic methods
Rearranging formulae
e.g.Make F the subject of the formula C = 
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 =
9C = 5(F – 32)
Multiply each side by 9 to undo the dividing by 9
C = F - 32
Divide each side by 5 to undo multiplying by 5
F = C + 32
For more information see:
Changing the subject of a formula - higher
Literal equations
Solving literal equations
Rearrangement of formulae.
