Which of these is NOT equivalent to 2/3?

6/8. 4/6, 8/12 and 10/15 all reduce to 2/3. But 6/8 reduces to 3/4, not 2/3, so it is the odd one out.

Which of these is NOT equivalent to $\frac{2}{3}$ ?

Class 6FractionsFractions

A $\frac{6}{8}$
B $\frac{4}{6}$
C $\frac{8}{12}$
D $\frac{10}{15}$

Step-by-Step Solution

\frac{4}{6}, \frac{8}{12}

and

\frac{10}{15}

all reduce to

\frac{2}{3}

. But

\frac{6}{8}

reduces to

\frac{3}{4}

, not

\frac{2}{3}

, so it is the odd one out.

Answer: A)

\frac{6}{8}

Key idea: Equivalent fractions

If you cut a pizza into 2 pieces and take 1, you have 1/2. If you cut the same pizza into 4 pieces and take 2, you have 2/4 — the same amount. So 1/2 = 2/4. To find an equivalent fraction, multiply (or divide) both the numerator and the denominator by the same non-zero whole number. **Always do the same thing to both** — change only one and you change the value.

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Step-by-Step Solution

Key idea: Equivalent fractions

Master this chapter in 30 minutes a day.

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