Question

21÷3=7(м) 21+7=28(м) 21×3=63(д) 21+63=84(д,)​

Answer 1

Пошаговое объяснение:

21÷3=7(м) 21+7=28(м) 21×3=63(д) 21+63=84(д,)

ты всё правильно решил(-а)

Answer 2

It seems like you've provided some equations along with the letters "м" and "д." These letters are typically not used in standard mathematical equations, so it's unclear what they represent in this context.

In standard mathematical notation:

• 21 ÷ 3 = 7
• 21 + 7 = 28
• 21 × 3 = 63
• 21 + 63 = 84

If "м" and "д" have a specific meaning in your context, please provide more information, and I'll be happy to help you with your question.