Odpowiedź:
(3/4-2/4)×3=1/4×3=3/4
(1/3+1/7)×2=(7/21+3/21)×2=10/21×2=20/21
3/16×3+1/8×3=9/16+3/8=9/16+6/16=15/16
d) 10/11-2/5=50/55-22/55=28/55
e)7/9-3/4=28/36-27/36=1/36
f)(2i2/10+1i1/10)×2=3i3/10×2=33/10×2/1=33/5=6i1/3
g)(7/4×5-8i1/2)×3=(35/4-8i1/2)×3=(8i3/4-8i2/4)×3=1/4×3=3/4
h)(2×4/3-10/9)×3=(8/3-10/9)×3=(24/9-10/9)×3=14/9×3/1=14/3=4i2/3
