7*х=56
Х=56:7
Х=8
-3*х=48
Х=48:(-3)
Х=-16
-9х=-450
Х=-450:(-9)
Х=50
8х=-1600
Х=-1600:8
Х=-200
2). Отрицательное
Х + 2/7 = 1
х = 1 - 2/7
х = 7/7 - 2/7
х = 5/7
------------------------
1 - х = 4/7
х = 1 - 4/7
х = 7/7 - 4/7
х = 3/7
1)2.. 2)25.. 3)120..4)1..5)800...6)0