Mathematics · Indices and Surds
If a2x = b3y = c5z and b = a2c, then which one of the following is true?
- 12x - 5z = 3y
- 21x + 15z = 13y✓
- 31x - 35z = 13y
- 42x + 3y = 5z
Correct answer
1x + 15z = 13y
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