1)
( 41 + х ) - 12 = 83
41 + х = 83 + 12
41 + х = 95
х = 95 - 41
х = 54
проверка: ( 41 + 54 ) - 12 = 95 - 12 = 83
83 = 83 - верно
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2)
62 - ( х - 17 ) = 31
62 - 31 = х - 17
х - 17 = 31
х = 31 + 17
х = 48
проверка: 62 - ( 48 - 17 ) = 62 - 31 = 31
31 = 31 - верно
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Verified answer
1)
( 41 + х ) - 12 = 83
41 + х = 83 + 12
41 + х = 95
х = 95 - 41
х = 54
проверка: ( 41 + 54 ) - 12 = 95 - 12 = 83
83 = 83 - верно
..............................................
2)
62 - ( х - 17 ) = 31
62 - 31 = х - 17
х - 17 = 31
х = 31 + 17
х = 48
проверка: 62 - ( 48 - 17 ) = 62 - 31 = 31
31 = 31 - верно