Question

Help me please!!!!!! It’s math btw.

Answer 1

1.  The 5/65 can be simplified, the a³ moves to the denominator, and bc is canceled from the numerator and denominator.
$\frac{5a^3 bc^2}{65 a^4 bc} = \frac{c}{13a}$

2.  The 10/125 can be simplified, the a³ moves to the denominator, and bc is canceled from the numerator and denominator.
$\frac{10a^3bc^2}{125a^4bc} = \frac{2c}{25a}$

3.  The 65/5 simplifies, the a³ moves to the numerator, and bc is canceled from the numerator and denominator.
$\frac{65a^4 bc^2}{5a^3 bc} = 13ac$

4.  The 10/130 simplifies, the b² cancels out in the numerator and denominator, and the $c^4$ moves to the numerator.
$\frac{10b^2 c^5}{130a^4b^2c^4} = \frac{c}{13a^4}$

5.  The 10/130 simplifies, the b² cancels out in the numerator and denominator, the $a^4$ moves to the numerator, and the $c^4$ moves to the numerator.
$\frac{10a^5b^2c^5}{130a^4b^2c^4} = \frac{ac}{13}$


I believe the only expression that simplifies to $\frac{c}{13a}$ is the first one.