(5 2/9 y + 3 1/3) *3 - 7 2/3y Y=3 1/8 y=1,4

Question

(5 2/9 y + 3 1/3) *3 - 7 2/3y
Y=3 1/8 y=1,4

Answer 1

(5 2/9 y + 3 1/3) *3 - 7 2/3y=(47/9 y + 10/3) *3 - 7 2/3y=47/3 y + 10 - 7 2/3y=
=15 2/3 y + 10 - 7 2/3y=8у+10

при Y=3 1/8
8*3 1/8+10=8*25/8+10=25+10=35

при y=1,4
8*1,4+10=11,2+10=21,2