Вычислите устно:
а) $\snippet{name: op_column_rows, args: ['50 * 2', '- 58', ': 14', '+21', ': 12'], solution: '?'}$;
б) $\snippet{name: op_column_rows, args: ['32 + 58', ': 6', '- 2', '* 5', '+ 35'], solution: '?'}$;
в) $\snippet{name: op_column_rows, args: ['32 + 25', ': 5', '- 9', '* 16', '+ 12'], solution: '?'}$;
г) $\snippet{name: op_column_rows, args: ['6 * 12', '+ 28', ': 10', '- 6', '* 15'], solution: '?'}$;
д) $\snippet{name: op_column_rows, args: ['32 : 16', '* 25', '+ 34', ': 12', '* 10'], solution: '?'}$.