Решите уравнения. x + 18 = 65 49 - x = 21 72 + x = 117 82 - x = 42 x + 54 = 96 172 - x = 63 x - 217 = 53 x - 72 = 138 x - 153 = 42

Х+18=65
х=65-18
х=47
49-х=21
х=49-21
х=28
72+х=117
х=117-72
х=45
82-х=42
х=82-42
х=40
х+54=96
х=96-54
х=42
172-х=63
х=172-63
х=109
х-217=53
х=217-53
х=164
х-72=138
х=138-72
х=66
х-153=42
х=153+42
х=195