wykonaj odejmowanie ulamkow i sprawdzenie a) 12i 3/5-5i 4/5= b) 5i 4/7-4i 6/7= c) 11i 13/17- 2i 15/17= d) 3i 1/4-2 i3/4= e) 15i 1/3- 13i 2/3= f) 5 i4/11-2i 9/11= g) 24i 3/9-7 i8/9= h) 21i 2/33- 2i 12/33= / to kreska ulamkowa prosze o pomoc

a) 12i3/5 -5i4/5=6i4/5 bo 6i4/5+5i4/5=12i3/5 b) 5i4/7-4i6/7=5/7 bo 5/7+4i6/7=5i4/7 c) 11i13/17-2i15/17=8i15/17 bo 8i15/17+2i15/17=11i13/17 d) 3i1/4 -2i3/4=2/4 bo2/4+2i3/4=3i1/4 e) 15i1/3-13i2/3=1i2/3 bo 1i2/3+13i2/3=15i1/3 f) 5i4/11-2i9/11=2i6/11 bo2i6/11+2i9/11=5i4/11 g) 24i3/9-7i8/9=16i4/9 bo 16i4/9+7i8/9=24i3/9 h) 21i2/33-2i12/33= =18i23/33 bo 18i23/33+2i12/33= =21i2/33