(4,479-3x):0,06+6,4=80

Question

(4,479-3x):0,06+6,4=80

Answer 1

(4,479-3х):0,06=80+6,4
(4,479-3х):0,06=86,4
4,479-3х=86,4:0,06
4,479-3х=1440
3х=4,479-1440
3х=-1435,521
х=-1435,521:3
х=-478,507