(х-15,7)*28,2=20,34+12,5
28,2х-319,338=32.84
28,2х=32.84+319,338
28,2х=352.178
х=352.178:28,2
х=12.4885815603
(х-15,7)*28,2=20,34+12,5
28,2х-319,338=32.84
28,2х=32.84+319,338
28,2х=352.178
х=352.178:28,2
х=12.4885815603