(4/7)^6*(1 3/4)^4=
(4/7)^6*(7/4)^4=
(4/7)^6*(4/7)^-4=
(4/7)^2=4/7*4/7= 16/49
вроде так
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(4/7)^6*(1 3/4)^4=
(4/7)^6*(7/4)^4=
(4/7)^6*(4/7)^-4=
(4/7)^2=4/7*4/7= 16/49
вроде так