Упрости выражение a+2a+3b 4s+s+3r+s

Question

Упрости выражение a+2a+3b
4s+s+3r+s

Answer 1

A+2a+3b=3a+3b=3(a+b)
4s+s+3r+s=6s+3r=3(2s+r)

Comments

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Answer 2

3а+3в=3(а+в)
6s+3r=3(2s+r)