EM-1475

Changing the subject of a formula

E Math · Secondary 4 · Medium · Changing the subject of a formula

1. $r = \dfrac{3q-2p}{4}$
2. $r = \dfrac{2p-3q}{4}$
3. $r = \dfrac{3q+2p}{4}$
4. $r = \dfrac{3q-4p}{2}$

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