Odpowiedź:
A)
[tex]3 \frac{3}{7} - 7 = \frac{25}{7} = - 3 \frac{4}{7} [/tex]
B) 5,4-(-6)=5,4+6=0,6
C)
[tex] - \frac{3}{9} - 1 \frac{1}{9} = - \frac{13}{9} = - 1 \frac{4}{9} [/tex]
D)
[tex]1 \frac{4}{9} - 3 \frac{5}{6} = - \frac{43}{18} = - 2 \frac{7}{18} [/tex]