Question

Rezultatul calculului 1/20 : (-1/10)-(-1/2) este ..., cu rezolvare va rog .

Answer 1

$\frac{1}{20} : ( - \frac{1}{10}) - ( - \frac{1}{2}) = \frac{1}{20} : - \frac{1}{10} - ( - \frac{1}{2}) = \frac{1}{2} \times \frac{10}{ - 1} - ( - \frac{1}{2}) = \frac{1 \times 10}{ - 20} - ( - \frac{1}{2}) = \frac{10}{ - 20} - ( - \frac{1}{2}) = - \frac{10}{20} - ( - \frac{1}{2}) = - \frac{1}{2} - ( - \frac{1}{2}) = - \frac{1}{2} + \frac{1}{2} = 0$