Oblicz, pamietajac o kolejnosci wykonywania dzialan: a)(2 3/4-4/5)*1 3/7= b)(15 2/3-7 1/2)+1 1/2= c)2*(1/3)^2=3*(1/2)^3= d)4 1/2*1 1/3-2 2/3*1 6/15= e)1 2/3-5/6+2 1/10:1 6/15= f)(5/8+1/2):1 1/2-1/3=
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a) (2i3/4-4/5)*1i3/7=(11/4-4/5)*10/7=(55/20-16/20)*10/7=39/20*10/7=390/140=2i11/14
b) (47/3-15/2)+3/2=(94/6-45/6)+9/6=49/6+9/6=58/6=9i1/3
c) 2*1/9+3*1/8=2/9+25/8=16/72+225/72=241/72=3i25/72
d)1/2*4/3-8/3*21/15=2/3-168/45=30/45-168/45=-138/45=-3i1/15
e) 10/6-5/6+21/10:21/15=5/6+21/10*15/21=5/6+315/210=180/210+315/210=495/210=
2i15/42
f) (5/8+4/8):3/2-1/3=9/8*2/3-1/3=18/24-8/24=10/24=5/12