(125/16) -² : (75/8)-³=
(54/35)³ * (9/7)-² * (5/6)³+
(0,5 * 8⁶ -2 * (4)⁸) :7³=
(125/16) -² : (75/8)-³ = (16/125)² : (8/75)³ =
= (16*16/125*125) : (8*8*8/75*75*75) =
= (16*16/125*125) * (75*75*75/8*8*8) =
= (2*2/5*5) * (3*3*75/1*1*8) =
= (4*25) * (9*75/8) =
= 27/2 =
= 13,5
(54/35)³ * (9/7)-² * (5/6)³ + [0,5 * 8⁶ -2 * (4)⁸] : 7³ =
= (54/35)³ * (5/6)³ * (9/7)-² + [0,5 * 1 - 2 * 1] : 7³ =
= (54/35 * 5/6)³ * (9/7)-² + (0,5 - 2) : 343 =
= (9/7)³ * (9/7)-² + ( - 1,5) : 343 =
= 9/7 - 3/2 * 1/343 =
= 9/7 - 3/686 =
= 882/686 - 3/686 =
= 879/686 =
= 1 193/686
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(125/16) -² : (75/8)-³ = (16/125)² : (8/75)³ =
= (16*16/125*125) : (8*8*8/75*75*75) =
= (16*16/125*125) * (75*75*75/8*8*8) =
= (2*2/5*5) * (3*3*75/1*1*8) =
= (4*25) * (9*75/8) =
= 27/2 =
= 13,5
(54/35)³ * (9/7)-² * (5/6)³ + [0,5 * 8⁶ -2 * (4)⁸] : 7³ =
= (54/35)³ * (5/6)³ * (9/7)-² + [0,5 * 1 - 2 * 1] : 7³ =
= (54/35 * 5/6)³ * (9/7)-² + (0,5 - 2) : 343 =
= (9/7)³ * (9/7)-² + ( - 1,5) : 343 =
= 9/7 - 3/2 * 1/343 =
= 9/7 - 3/686 =
= 882/686 - 3/686 =
= 879/686 =
= 1 193/686