Ответ:

[tex]( - \frac{1}{4} + \frac{1}{5} ) + (6.3 - 7.35) - ( - 0.1) = \\ = ( - \frac{5}{20} + \frac{4}{20} ) + ( - 1.05) + 0.1 = \\ = - \frac{1}{20} - 1.05 + 0.1 = \\ = - \frac{5}{100} - 0.95 = - 0.05 - 0.95 = - 1[/tex]