Question

Efectuati :
a) -1,1(6) : (-1,75) + 0,(3) * (-0,5)
b) 3 intregi si 11/5 : [ 2 - 2intregi 2/5 * (5/9 - 1/2 )]

Answer 1

a)
$- \frac{105}{90} \div ( - \frac{175}{100} ) + \frac{3}{9} \times ( - \frac{5}{10} ) = \\ \frac{7}{6} \times \frac{100}{75} - \frac{1}{3} \times \frac{1}{2} = \\ \frac{7}{6} \times \frac{4}{7} - \frac{1}{6} = \frac{1}{3} \times 2 - \frac{1}{6} = \\ \frac{2}{3} - \frac{1}{6} = \\ \frac{1}{2}$
Doar pe asta am putut sa.l fac