х+72=99+1
x=99+1-72
x=28
92-х=43+14
-x=43+14-92
-x=-35
x=35
1) х+72=99+1
x +72 = 100
x = 100-72
x = 28
2) 92-х=43+14
92-x = 57
x = 92-57
x = 35
х+72=99+1
x=99+1-72
x=28
92-х=43+14
-x=43+14-92
-x=-35
x=35
1) х+72=99+1
x +72 = 100
x = 100-72
x = 28
2) 92-х=43+14
92-x = 57
x = 92-57
x = 35