1. The problem is to rearrange the equation $m = r + z$ to make $r$ the subject and then to make $z$ the subject.
2. To make $r$ the subject, subtract $z$ from both sides:
$$m - z = r + z - z$$
which simplifies to
$$r = m - z$$
3. To make $z$ the subject, subtract $r$ from both sides:
$$m - r = r + z - r$$
which simplifies to
$$z = m - r$$
Final answers:
- $r = m - z$
- $z = m - r$
Rearrange Equation
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.