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b)(1 1/2) do potęgi 3 * (2/3) do trzeciej -1/5 * 2 1/6 =(3/2)³×8/27 -1/5×13/6=27/8 ×8/27-13/30=1- 13/30=17/30
c)(5 1/5 - 2 3/4) :2 do drugiej =(26/5 - 11/4) ÷ 4= (104/20 - 55/20)÷4=49/20÷4= 49/20 × 1/4= 49/80
d) (2 1/3) do drugiej :7 - 2/3 =(7/3)²÷7 - 2/3=49/9÷7 -2/3= 49/9× 1/7-2/3= 7/9- 2/3=7/9 - 6/9=1/9
b)(1,1/2)do3*(2/3)do3-1/5*2,1/6=(3/2)do3*(2/3)do3-1/5*13/6=
3/2*3/2*3/2*2/3*2/3*2/3-13/30=1-13/30=17/30
c)(5,1/5-2,3/4):2do2=(5,4/20-2,15/20):4=2,9/20*1/4=29/20*1/4=29/80
d)(2,1/3)do2:7-2/3=(7/3*7/3):7-2/3=49/9*1/7-2/3=7/9-6/9=1/9