1)Розвяжить ривняння; 2 1/3(x-3 1|2)=8 5/9.
2 1/3(х-3 1/2)=8 5/9 7/3(х-7/2)=8 5/9 7/3х-49/6=8 5/9 7/3х=8 5/9+8 1/6 7/3х=8 10/18+8 3/18 7/3х=16 13/18 7/3х=301/18 х=301/18:7/3 х=43/6 х=7 1/6
Спасиба
2 1/3( x - 3 1/2 ) = 8 5/9 7/3( x - 7/2 ) = 77/9 x - 7/2 = 77/9 : 7/3 x - 3 1/2 = 11/3 x = 3 2/3 + 3 1/2 x = 3 4/6 + 3 3/6 x = 6 7/6 x = 7 1/6