2097152,279936,4782969,16384
7 ×8=56
7×6=42
7×9=63
7×4=28
х+(х+1,52)=10,2
х+х+1.52=10,2
2х+1.52=10.2
2х=10.2-1.52
2х=8,68
х=4.34