Are the following fractions equivalent?
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Answer
Yes, because
Yes, because we multiplied the numerator and denominator each by 4.
No, because we multiplied the numerator by 4 and the denominator by 5.
What's the missing numerator?
Multiply the numerator and denominator by 4 to get 16 for the new numerator.
We're multiplying the denominator by 10, so do the same thing to the numerator to get 50.
We can see that 7 × 6 = 42, so multiply the numerator by 6 as well to get 18.
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