Question

1-900 supra 1200 rezultatul calului este

Answer 1

$1 - \frac{900}{1200} = \frac{1}{1} - \frac{900}{1200} = \frac{1 \times 1200}{9 \times 1200} - \frac{900}{1200} = \frac{1200}{1200} - \frac{900}{1200} = \frac{1200 - 900}{1200} = \frac{300}{1200} ^{(3} = \frac{1}{4}$