(2х-25)*4+4х=200
4*2х-25*4+4х=200
8х-25*4+4х=200
8х-100+4х=200
8х+4х=200+100
8х+4х=300
12х=300
х=300/12
х=150/6
х=75/3
х=25
(2х-25)*4+4х=200
4*2х-25*4+4х=200
8х-25*4+4х=200
8х-100+4х=200
8х+4х=200+100
8х+4х=300
12х=300
х=300/12
х=150/6
х=75/3
х=25