49⁵·7¹²/343⁷=
(4/7)⁶·(1 3/4)⁴=

1) 49^5 • 7^12 = 7^10 • 7^12 = 7^22 2) 343^7 = ( 7^3 )^7 = 7^21 3) 7^22 : 7^21 = 7^1 = 7 Ответ 7 ••••••••••1) ( 1 3/4 ) = ( 7/4 )^4 2) ( 4/7 )^6 = ( 7/4 )^-6 3) ( 7/4 )^-6 • ( 7/4 )^4 = ( 7/4 )^-2 = ( 4/7 )^2 = 16/49 Ответ 16/49

1)49^5*7^12/343^7=7^10*7^12/7^21=7^22/7^21=7 2)(4/7)^6*(1 3/4)^4=(4/7)^6*(7/4)^4=(4^6*7^4)/(7^6*4^4)=4^2/7^2=16/49