(2,8-0,1х)*3,7=7.4
10,36-0,37х=7,4
-0,37х=7,4-10,36
-0,37х=-2,96
х=8
Проверка:
(2,8-0,1*8)*3,7=7,4
2.8-0.1x=7.4:3.7
2.8-0.1x=2
-0.1x=2-2.8
-0.1x=-0.8
x=8
Проверка: (2.8-0.1*8)*3.7=7.4
(2.8-0.8)*3.7=7.4
2*3.7=7.4
7.4=7.4
(2,8-0,1х)*3,7=7.4
10,36-0,37х=7,4
-0,37х=7,4-10,36
-0,37х=-2,96
х=8
Проверка:
(2,8-0,1*8)*3,7=7,4
2.8-0.1x=7.4:3.7
2.8-0.1x=2
-0.1x=2-2.8
-0.1x=-0.8
x=8
Проверка: (2.8-0.1*8)*3.7=7.4
(2.8-0.8)*3.7=7.4
2*3.7=7.4
7.4=7.4