Answer:
a = [tex]\frac{4d^3}{7-m}[/tex]
Step-by-step explanation:
Given
4d³ = 7a - ma ← factor out a from each term on the left side
4d³ = a(7 - m) ← divide both sides by (7 - m)
[tex]\frac{4d^3}{7-m}[/tex] = a
