Question

Why 3/7 is iqual to 9

Answer 1

Answer:

i don't think it is equal to 9

Answer 2

Answer:

$\frac{3}{7} \neq 9$

Step-by-step explanation:

This question argues that the value $\frac{3}{7}=9$, but this simply isn't true. If one wanted to get the value $9$ from a fraction whose denominator is $7$, one would do the following math:

$9=\frac{x}{7}$

• $9$ is the same as the fraction $\frac{9}{1}$. This is because $1$ goes into $9$ nine times.

$\frac{9}{1} = \frac{x}{7}$

• Now we do something called "cross-multiplication". This is a process of multiplying the numerator of the first fraction by the denominator of the second fraction and vise-versa. There is a way to prove that this method works, but that isn't part of the question, so I'd recommend looking it it up or asking your teacher.

$x=63$

• By multiplying the numerator of $\frac{9}{1}$, $9$, and the denominator of  $\frac{x}{7}$, $7$, our final answer is $63$. Multiplying the numerator of $\frac{x}{7}$, $x$, and the denominator of $\frac{9}{1}$, $1$, we just get $x$, so this is our final solution for $x$.

$9=\frac{63}{7}$

Because we proved that $9=\frac{63}{7}$, we know that $9 \neq \frac{3}{7}$.