0,75 × 1/9 + 1/8 - 0,8 × 3/8

[tex] (\frac{3}{4} \times \frac{1}{9} )+ \frac{1}{8} - (\frac{8}{10} \times \frac{3}{8} ) \\ = \frac{1}{12} + \frac{1}{8} - \frac{3}{10} \\ = \frac{80 + 120 - 288}{960} \\ = \frac{88}{960} \\ = \frac{44}{480} \\ = \frac{11}{120}[/tex]