Ответ:
=(3a-na)+(3-n)=a(3-n)+1(3-n)=(3-n)(a+1)
3a + 3 - na - n
3 × (а + 1) - n × (a + 1)
(a + 1) × (3 - n)
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Ответ:
=(3a-na)+(3-n)=a(3-n)+1(3-n)=(3-n)(a+1)
Ответ:
3a + 3 - na - n
3 × (а + 1) - n × (a + 1)
(a + 1) × (3 - n)