Advanced Math practice question

Answer: A. x/2

Write both over 6: 5x/6 − 2x/6 = 3x/6 = x/2.

Why the other answers are wrong

B. 4x/3

4x/3 subtracts the denominators (6 − 3) and the numerators (5 − 1) separately. Fractions need a common denominator first.

C. 2x/3

2x/3 is 4x/6 — that's what you'd get from 5x/6 − x/6, treating x/3 as x/6.

D. 5x/18

5x/18 multiplies the denominators; subtraction uses a common denominator, not a product.

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