Question

3/7 = 12/d The missing denominator is___
7/10 = n/100 The missing denominator is____

Answer 1

To find the missing denominators in the equations, we can cross multiply.

1. For the equation \( \frac{3}{7} = \frac{12}{d} \):

Cross multiplying gives:
\[
3d = 7 \times 12
\]
\[
3d = 84
\]
Now, divide both sides by 3:
\[
d = \frac{84}{3} = 28
\]
So, the missing denominator is **28**.

2. For the equation \( \frac{7}{10} = \frac{n}{100} \):

Cross multiplying gives:
\[
7 \times 100 = 10n
\]
\[
700 = 10n
\]
Now, divide both sides by 10:
\[
n = \frac{700}{10} = 70
\]
So, the missing numerator is **70**.

To summarize:
- The missing denominator \( d \) in the first equation is **28**.
- The missing numerator \( n \) in the second equation is **70**.