(4,479 -3х):0,006+6,4=80
4,479-3х = (80-6,4) * 0,006
4,479-3х=0,4416
-3х=0,4416-4,479
-3х=-4,0374
х=-4,0374/-3
х=1,3458
(4,479 -3х):0,006+6,4=80
4,479-3х = (80-6,4) * 0,006
4,479-3х=0,4416
-3х=0,4416-4,479
-3х=-4,0374
х=-4,0374/-3
х=1,3458