write $\frac{9}{10}$ in lowest terms. $\frac{square}{square}$

$write $\frac{9}{10}$ in lowest terms. $\frac{square}{square}$$

The greatest common divisor (GCD) of 9 and 10 is 1, since the factors of 9 are 1, 3, 9 and factors of 10 are 1, 2, 5, 10.

Since GCD is 1, the fraction is already in lowest terms.

$\frac{9}{10}$