1. Oblicz:
а) (-23) - (-3) =
b) (-12 ): 3 =
proszę na teras

[tex]a) (-2\frac{1}{3} )*(-1\frac{2}{7} )=(-\frac{7}{3} )*(-\frac{9}{7} )=-1*(-3)=3\\\\(-12\frac{2}{3} ):3\frac{1}{6} =(-\frac{38}{3} ):\frac{19}{6} =(-\frac{38}{3} )*\frac{6}{19} =-2*2=-4[/tex]