T = R + P315Q
T = R - 15P3Q
T = R + P315Q
T = 15R - QP3
Correct answer is B
Cubic both sides; P3 = Q(R−T)15
(cross multiplication) Q(R - T) = 15P3
(divide both sides by Q); R - T = 151Q
(subtract r from both sides) - T = 15P3Q−R
T = R - 15P3Q
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