Вычислите устно:
а) $\snippet{name: op_column_rows, args: ['90 - 16', ': 2', '+ 23', ': 5'], solution: '?'}$;
б) $\snippet{name: op_column_rows, args: ['50 + 19', ': 3', '+47', ': 5'], solution: '?'}$;
в) $\snippet{name: op_column_rows, args: ['42 + 26', ': 2', '-16', '* 3'], solution: '?'}$;
г) $\snippet{name: op_column_rows, args: ['60 - 22', ': 2', '+ 46', ': 5'], solution: '?'}$;
д) $\snippet{name: op_column_rows, args: ['70 - 19', ': 3', '+ 13', '* 5'], solution: '?'}$.