Question

1) 2a + 3b + m - c;​

Answer 1

Ответ: нет решений, потому что там нет похожих букв.

Answer 2

It looks like you've provided a mathematical expression: 2a + 3b + m - c. This expression involves variables a, b, m, and c. Is there something specific you would like to do with this expression? Do you need to simplify it, factor it, solve for any variables, or perform some other operation? Please provide more context or details so that I can assist you effectively.